CA2175244A1 - Purge feeding means and method - Google Patents
Purge feeding means and methodInfo
- Publication number
- CA2175244A1 CA2175244A1 CA002175244A CA2175244A CA2175244A1 CA 2175244 A1 CA2175244 A1 CA 2175244A1 CA 002175244 A CA002175244 A CA 002175244A CA 2175244 A CA2175244 A CA 2175244A CA 2175244 A1 CA2175244 A1 CA 2175244A1
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- solid material
- rotated
- auger screw
- interlocking solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B33/00—Discharging devices; Coke guides
- C10B33/02—Extracting coke with built-in devices, e.g. gears, screws
Abstract
The present invention includes a purge chamber which includes a chamber (3) holding the interlocking solid material. An entrance port apparatus (120) passes the interlocking solid material into the chamber (3) where it is purged by a purging gas (135). An exit port apparatus (65) passes the solid interlocking material from the chamber. Located within the chamber is other apparatus (80) which moved the interlocking solid material from the chamber through the exit port apparatus. Further, located within the chamber is yet other apparatus (88) which prevents the binding of the interlocking solid material.
Description
2~S244 -PURGE FEEDING MEANS AND METHOD
-BACKGROUND OF THE INVENTION
Field of the Invention IP~/US 2 3 ~Ar 199S
The present invention relates to means and method for feeding interlocking solid material to process apparatus and, more particularly, to means and method for feeding shredded tires to a tire liquefaction process apparatus.
SUMMARY OF THE INVENTION
The present invention is a purge chamber which includes a chamber for holding interlocking solid material. An entrance port apparatus passes the interlocking solid material into the chamber where it is purged by a purging gas. An exit port apparatus passes the solid interlocking solid material from the chamber. Located within the chamber is moving apparatus which moved the interlocking solid material from the chamber through the exit port apparatus. Further, located within the chamber, is yet another apparatus which prevents the binding of the interlocking solid material.
The objectives and advantages of the invention will 0 appear more fully hereinafter from a consideration of the detailed description which follows, taken together with the accompanying drawings, wherein one embodiment of the invention is illustrated by way of example. It is to be expressly understood, however, that the drawings are for illustration AMENDED SHE~
2 1 1S~44 PCT/US94/12312 purpose and are not to be construed as defining the limits of the invention. Inr IrLA/US 2 3 I~AY 1995 DESCRIPTION OF THE DRAWINGS
Fig. 1 is a graphical representation of apparatus, constructed in accordance with the present invention, for the purge feeding of interlocking solid material to process apparatus.
Fig. 2 is an isometric view of the chamber shown in Fig. 1.
DESCRIPTION OF THE INVENTION
Referring to Figs. 1 and 2, there is shown apparatus for the purging of interlocking solid materials in a sealed chamber. The phrase "interlocking solid material" refers to solid substances that, because of their shape and/or composition, have a strong tendency to knit together like entangled yarn.
While the primary example of the present invention is related to discharging shredded tire pieces, other applications, such as woodchips, reinforced plastics and scrap may also be applicable.
In the discharging of shredded tire material to feed a tire liquefaction process, as described and disclosed in U.S.P.
Application, Serial No. 08/053,727 filed April 27, 1993, the shredded tire material is contacted with oil at a temperature of 700F. It is required, therefore, that the material be purge of oxygen prior to introduction into the liquefaction reactor. The present invention is for apparatus and method for doing that.
A chamber 3 with a top feed port 7 has support ~3El~En SH~t 2 ~ 4 PCT/US94/12312 IPEAIUS 2 3 A~AY ~996 members 15 to give it greater strength. Located within chamber 3 are hanger bars 22 which are used to support a material drive system inc~uding a drive motor 27. A drive shaft 36, rotated by motor 27, is connected to a gear reducer 44. Gear reducer 44 also provides a 90F translation of the driving force to another drive shaft 52. Associated with drive shaft 52 is a bearing 56 mounted on a mounting plate 58 being held in place by support members 65. At the bottom of chamber 3 is an exit port 72.
Connected to drive shaft 52 is a screw auger 80. By way of example, screw auger 80, preferably turning at 20 revolutions per minute, might have a 10-inch diameter centered over a 16-inch outlet port 72. Arranged on either side of screw auger 80 are a pair of cylinders 88 having a plurality of lugs 96 mounted in a predetermined manner thereon. It should be noted that the bottom of chamber 3 is curved so as not to create any dead space between the lugs 96 on cylinder 88 and the bottom of chamber 3. Motor drive means for rotating cylinders 88 on axles 104 are not shown but their location would be obvious to one skilled in the art. The rotations of cylinders 88 may be any one of a combination of three movements with both cylinders 88 being rotated counterclockwise or having one cylinder being rotated clockwise and the other cylinder being rotated counterclockwise.
Cylinder 88 may be rotated at a rotational speed that may be from 1/lOth to 1/2 the speed of screw auger 80.
Also shown in Fig. 1 is feed valve means 120 and discharge valve means 125. These are simply conventional style gate valves that will allow the feed to enter chamber 3 and allow the feed material to exit chamber 3. Also shown in a simplified box diagram format, is a source of nitrogen 135 which provides purging nitrogen to chamber 3 through a line 140 including a valve 148.
~17 5~4 ~ PCT/US94/12312 IPEA/us 2 3 MAY 1995 As shown, the system of the present invention contemplates batch feeding of a tire liquefaction processing apparatus by having the interlocking solid material, namely the shredded tires, enter through valve means 120 which is then closed. In the meantime, discharge valve means 125 being closed prevents any of the shredded tires from entering the processing apparatus.
With both valve means 120 and 125 closed, valve 148 is open to allow nitrogen to enter chamber 3 to purge the oxygen that has entered with the tires. After the oxygen level has dropped to a suitable level, valve 148 is closed, discharge valve 125 is opened, and motor 27 is energized causing the screw auger 80 to rotate driving the shredded tire material out of bin 3.
However, as happens in many cases, the shredded tire will bind because of its interlocking nature. Screw auger 80 then has a tendency to tunnel through the bound material around the screw auger 80. When binding occurs, only the tire material within the range of screw auger 80 would be moved. It is at this junction that the operations of cylinders 88 by their motor drive means keep the tire material in motion so that the tire material is fed to auger screw 80, thus preventing the tunneling effect.
Upon removal of the shredded tire material from bin 3, discharge valve means 125 may be closed and the system shut down until the next batch is ready to be processed.
AMEN~ED SHEE~
~.~..:
-BACKGROUND OF THE INVENTION
Field of the Invention IP~/US 2 3 ~Ar 199S
The present invention relates to means and method for feeding interlocking solid material to process apparatus and, more particularly, to means and method for feeding shredded tires to a tire liquefaction process apparatus.
SUMMARY OF THE INVENTION
The present invention is a purge chamber which includes a chamber for holding interlocking solid material. An entrance port apparatus passes the interlocking solid material into the chamber where it is purged by a purging gas. An exit port apparatus passes the solid interlocking solid material from the chamber. Located within the chamber is moving apparatus which moved the interlocking solid material from the chamber through the exit port apparatus. Further, located within the chamber, is yet another apparatus which prevents the binding of the interlocking solid material.
The objectives and advantages of the invention will 0 appear more fully hereinafter from a consideration of the detailed description which follows, taken together with the accompanying drawings, wherein one embodiment of the invention is illustrated by way of example. It is to be expressly understood, however, that the drawings are for illustration AMENDED SHE~
2 1 1S~44 PCT/US94/12312 purpose and are not to be construed as defining the limits of the invention. Inr IrLA/US 2 3 I~AY 1995 DESCRIPTION OF THE DRAWINGS
Fig. 1 is a graphical representation of apparatus, constructed in accordance with the present invention, for the purge feeding of interlocking solid material to process apparatus.
Fig. 2 is an isometric view of the chamber shown in Fig. 1.
DESCRIPTION OF THE INVENTION
Referring to Figs. 1 and 2, there is shown apparatus for the purging of interlocking solid materials in a sealed chamber. The phrase "interlocking solid material" refers to solid substances that, because of their shape and/or composition, have a strong tendency to knit together like entangled yarn.
While the primary example of the present invention is related to discharging shredded tire pieces, other applications, such as woodchips, reinforced plastics and scrap may also be applicable.
In the discharging of shredded tire material to feed a tire liquefaction process, as described and disclosed in U.S.P.
Application, Serial No. 08/053,727 filed April 27, 1993, the shredded tire material is contacted with oil at a temperature of 700F. It is required, therefore, that the material be purge of oxygen prior to introduction into the liquefaction reactor. The present invention is for apparatus and method for doing that.
A chamber 3 with a top feed port 7 has support ~3El~En SH~t 2 ~ 4 PCT/US94/12312 IPEAIUS 2 3 A~AY ~996 members 15 to give it greater strength. Located within chamber 3 are hanger bars 22 which are used to support a material drive system inc~uding a drive motor 27. A drive shaft 36, rotated by motor 27, is connected to a gear reducer 44. Gear reducer 44 also provides a 90F translation of the driving force to another drive shaft 52. Associated with drive shaft 52 is a bearing 56 mounted on a mounting plate 58 being held in place by support members 65. At the bottom of chamber 3 is an exit port 72.
Connected to drive shaft 52 is a screw auger 80. By way of example, screw auger 80, preferably turning at 20 revolutions per minute, might have a 10-inch diameter centered over a 16-inch outlet port 72. Arranged on either side of screw auger 80 are a pair of cylinders 88 having a plurality of lugs 96 mounted in a predetermined manner thereon. It should be noted that the bottom of chamber 3 is curved so as not to create any dead space between the lugs 96 on cylinder 88 and the bottom of chamber 3. Motor drive means for rotating cylinders 88 on axles 104 are not shown but their location would be obvious to one skilled in the art. The rotations of cylinders 88 may be any one of a combination of three movements with both cylinders 88 being rotated counterclockwise or having one cylinder being rotated clockwise and the other cylinder being rotated counterclockwise.
Cylinder 88 may be rotated at a rotational speed that may be from 1/lOth to 1/2 the speed of screw auger 80.
Also shown in Fig. 1 is feed valve means 120 and discharge valve means 125. These are simply conventional style gate valves that will allow the feed to enter chamber 3 and allow the feed material to exit chamber 3. Also shown in a simplified box diagram format, is a source of nitrogen 135 which provides purging nitrogen to chamber 3 through a line 140 including a valve 148.
~17 5~4 ~ PCT/US94/12312 IPEA/us 2 3 MAY 1995 As shown, the system of the present invention contemplates batch feeding of a tire liquefaction processing apparatus by having the interlocking solid material, namely the shredded tires, enter through valve means 120 which is then closed. In the meantime, discharge valve means 125 being closed prevents any of the shredded tires from entering the processing apparatus.
With both valve means 120 and 125 closed, valve 148 is open to allow nitrogen to enter chamber 3 to purge the oxygen that has entered with the tires. After the oxygen level has dropped to a suitable level, valve 148 is closed, discharge valve 125 is opened, and motor 27 is energized causing the screw auger 80 to rotate driving the shredded tire material out of bin 3.
However, as happens in many cases, the shredded tire will bind because of its interlocking nature. Screw auger 80 then has a tendency to tunnel through the bound material around the screw auger 80. When binding occurs, only the tire material within the range of screw auger 80 would be moved. It is at this junction that the operations of cylinders 88 by their motor drive means keep the tire material in motion so that the tire material is fed to auger screw 80, thus preventing the tunneling effect.
Upon removal of the shredded tire material from bin 3, discharge valve means 125 may be closed and the system shut down until the next batch is ready to be processed.
AMEN~ED SHEE~
~.~..:
Claims (10)
1. A purge chamber comprising:
chamber means for holding interlocking solid material, entrance port means connected to the chamber means for passing the interlocking solid material into the chamber means;
purge means connected to the chamber means for providing a purging gas to the chamber means;
exit port means connected to the chamber means for passing the interlocking solid material from the chamber means;
auger screw means for moving the interlocking solid material from within the chamber means into the exit port means when rotated;
means for rotating the auger screw means;
at least two rotatable cylinders rotating around an axis substantially perpendicular to the longitudinal axis of the auger screw means, said rotatable cylinders rotated by motor means and having a plurality of lugs arranged on the cylinders for breaking up the interlocking solid material so as to prevent binding around the auger screw means.
chamber means for holding interlocking solid material, entrance port means connected to the chamber means for passing the interlocking solid material into the chamber means;
purge means connected to the chamber means for providing a purging gas to the chamber means;
exit port means connected to the chamber means for passing the interlocking solid material from the chamber means;
auger screw means for moving the interlocking solid material from within the chamber means into the exit port means when rotated;
means for rotating the auger screw means;
at least two rotatable cylinders rotating around an axis substantially perpendicular to the longitudinal axis of the auger screw means, said rotatable cylinders rotated by motor means and having a plurality of lugs arranged on the cylinders for breaking up the interlocking solid material so as to prevent binding around the auger screw means.
2. Cancelled.
3. Cancelled.
4. Cancelled.
5. A chamber as described in Claim 1, in which the axis of rotation for each rotatable cylinder is substantially parallel to the axis of rotation for the other rotatable cylinder.
6. Cancelled.
7. A chamber as described in Claim 1 in which the auger screw means is preferably being rotated at 20 revolutions per minute.
8. A chamber as described in Claim 7 in which each rotatable cylinder is rotated at a frequency of 1/10th to 1/2 the rotational speed of the auger screw means.
9. A chamber as described in Claim 1 in which each rotatable cylinder is rotated in the same rotational direction.
10. A chamber as described in Claim 1 in which the rotatable cylinders are rotated in opposite directions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/142,020 US5433018A (en) | 1993-10-28 | 1993-10-28 | Purge feeding means and method |
| US08/142,020 | 1993-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2175244A1 true CA2175244A1 (en) | 1995-05-04 |
Family
ID=22498234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002175244A Abandoned CA2175244A1 (en) | 1993-10-28 | 1994-10-27 | Purge feeding means and method |
Country Status (18)
| Country | Link |
|---|---|
| US (2) | US5433018A (en) |
| EP (1) | EP0725920B1 (en) |
| JP (1) | JP2743218B2 (en) |
| CN (1) | CN1047840C (en) |
| AU (1) | AU678639B2 (en) |
| BG (1) | BG100523A (en) |
| BR (1) | BR9407915A (en) |
| CA (1) | CA2175244A1 (en) |
| DE (1) | DE69410284T2 (en) |
| DK (1) | DK0725920T3 (en) |
| FI (1) | FI961807A0 (en) |
| HU (1) | HUT74214A (en) |
| NO (1) | NO961619D0 (en) |
| NZ (1) | NZ275342A (en) |
| PL (1) | PL314137A1 (en) |
| SK (1) | SK54396A3 (en) |
| TW (1) | TW267130B (en) |
| WO (1) | WO1995012103A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433018A (en) * | 1993-10-28 | 1995-07-18 | Texaco Inc. | Purge feeding means and method |
| EP1896035B1 (en) * | 2004-06-16 | 2014-10-15 | Jack L. Arbiser | Carbazole formulations for the treatment of psoriasis and angiogenesis |
| EP2488605B1 (en) * | 2009-10-14 | 2020-04-01 | Black Cat Carbon Engineering | Pyrolysis process |
| DE102016121232A1 (en) * | 2016-11-07 | 2018-05-09 | Walter Geroldinger | PROCESS FOR PROCESSES IN THE BULK BY MEASURING GASES |
| CN115231335B (en) * | 2022-08-01 | 2023-05-26 | 赣州步莱铽新资源有限公司 | Continuous rare earth waste quantitative discharging device |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2351706A (en) * | 1943-11-16 | 1944-06-20 | Robinson Thomas | Apparatus for treating plastic material in a controlled atmosphere |
| US3766664A (en) * | 1972-08-08 | 1973-10-23 | K Burgin | Grain circulating system |
| US4235676A (en) * | 1977-09-16 | 1980-11-25 | Deco Industries, Inc. | Apparatus for obtaining hydrocarbons from rubber tires and from industrial and residential waste |
| US4250158A (en) * | 1978-02-15 | 1981-02-10 | Intenco, Inc. | Process for recovering carbon black and hydrocarbons from used tires |
| US4255129A (en) * | 1979-07-11 | 1981-03-10 | Thomas N. DePew | Apparatus and method for processing organic materials into more useful states |
| US4474524A (en) * | 1981-03-30 | 1984-10-02 | Kabushiki Kaisha Kobe Seiko Sho | System for discharging thermal decomposition residue containing carbon residue and steel wire balls |
| US4454427A (en) * | 1981-11-10 | 1984-06-12 | Leon Sosnowski | Incinerator and fume separator system and apparatus |
| US4499669A (en) * | 1982-09-30 | 1985-02-19 | Miller Hofft, Inc. | Combination dryer and surge bin |
| CA1225062A (en) * | 1983-09-13 | 1987-08-04 | Trevor R. Bridle | Processes and apparatus for the conversion of sludges |
| US4652289A (en) * | 1984-11-26 | 1987-03-24 | Hydro-Quebec | Purification of effluent gases |
| US4686008A (en) * | 1985-10-08 | 1987-08-11 | Gibson Harry T | Pyrolytic decomposition apparatus |
| US5037628A (en) * | 1987-08-14 | 1991-08-06 | American Tire Reclamation, Inc. | Method for reclaiming carbonaceous material from a waste material |
| US4900401A (en) * | 1988-06-20 | 1990-02-13 | Horton Norman P | Continuous pyrolysis system for tire shreds |
| US4932785A (en) * | 1988-06-21 | 1990-06-12 | Bracegirdle P E | Aggregate drying system with improved aggregate dryer and mass flow apparatus |
| US4889556A (en) * | 1988-08-01 | 1989-12-26 | Westinghouse Electric Corp. | Method of recycling steel belted tires |
| US5074225A (en) * | 1989-10-18 | 1991-12-24 | Petrie A Stephen | Mechanism for feeding solid materials |
| US5129995A (en) * | 1990-02-01 | 1992-07-14 | General Motors Corporation | Pyrolysis process and apparatus |
| US5157176A (en) * | 1990-07-26 | 1992-10-20 | Munger Joseph H | Recycling process, apparatus and product produced by such process for producing a rubber extender/plasticizing agent from used automobile rubber tires |
| US5127588A (en) * | 1991-02-11 | 1992-07-07 | Tire Service Equipment Mfg. Co. Inc. | Tire chipper |
| US5095040A (en) * | 1991-02-11 | 1992-03-10 | Ledford Charles D | Process for conveying old rubber tires into oil and a useful residue |
| US5198018A (en) * | 1991-02-14 | 1993-03-30 | General Motors Corporation | Pyrolysis process and apparatus |
| US5257586A (en) * | 1992-02-26 | 1993-11-02 | Davenport Ricky W | Method and apparatus for feeding to a rotary device |
| US5430207A (en) * | 1993-05-20 | 1995-07-04 | Keck; Jack C. | Process for degrading complex hydrocarbons to produce simpler hydrocarbons |
| US5389691A (en) * | 1993-09-07 | 1995-02-14 | Univ. Of Wyoming | Process for co-recycling tires and oils |
| US5433018A (en) * | 1993-10-28 | 1995-07-18 | Texaco Inc. | Purge feeding means and method |
| US5464503A (en) * | 1993-10-28 | 1995-11-07 | Texaco Inc. | Tire liquefying process reactor discharge system and method |
| US5423950A (en) * | 1993-10-28 | 1995-06-13 | Texaco Inc. | Method and reactor for producing tire oil |
-
1993
- 1993-10-28 US US08/142,020 patent/US5433018A/en not_active Expired - Fee Related
-
1994
- 1994-10-27 US US08/637,692 patent/US5720854A/en not_active Expired - Fee Related
- 1994-10-27 DE DE69410284T patent/DE69410284T2/en not_active Expired - Fee Related
- 1994-10-27 DK DK94932068T patent/DK0725920T3/en active
- 1994-10-27 HU HU9601110A patent/HUT74214A/en unknown
- 1994-10-27 SK SK543-96A patent/SK54396A3/en unknown
- 1994-10-27 CN CN94193956A patent/CN1047840C/en not_active Expired - Fee Related
- 1994-10-27 PL PL94314137A patent/PL314137A1/en unknown
- 1994-10-27 WO PCT/US1994/012312 patent/WO1995012103A1/en active IP Right Grant
- 1994-10-27 JP JP7512816A patent/JP2743218B2/en not_active Expired - Lifetime
- 1994-10-27 EP EP94932068A patent/EP0725920B1/en not_active Expired - Lifetime
- 1994-10-27 TW TW083109928A patent/TW267130B/zh active
- 1994-10-27 BR BR9407915A patent/BR9407915A/en not_active Application Discontinuation
- 1994-10-27 NZ NZ275342A patent/NZ275342A/en unknown
- 1994-10-27 AU AU80932/94A patent/AU678639B2/en not_active Expired - Fee Related
- 1994-10-27 CA CA002175244A patent/CA2175244A1/en not_active Abandoned
-
1996
- 1996-04-19 BG BG100523A patent/BG100523A/en unknown
- 1996-04-23 NO NO961619A patent/NO961619D0/en unknown
- 1996-04-26 FI FI961807A patent/FI961807A0/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| HUT74214A (en) | 1996-11-28 |
| DE69410284T2 (en) | 1998-09-03 |
| BG100523A (en) | 1997-04-30 |
| FI961807A (en) | 1996-04-26 |
| TW267130B (en) | 1996-01-01 |
| EP0725920B1 (en) | 1998-05-13 |
| DK0725920T3 (en) | 1998-10-07 |
| BR9407915A (en) | 1996-11-26 |
| HU9601110D0 (en) | 1996-07-29 |
| NO961619L (en) | 1996-04-23 |
| AU8093294A (en) | 1995-05-22 |
| CN1134188A (en) | 1996-10-23 |
| EP0725920A4 (en) | 1996-10-30 |
| WO1995012103A1 (en) | 1995-05-04 |
| NZ275342A (en) | 1997-04-24 |
| EP0725920A1 (en) | 1996-08-14 |
| NO961619D0 (en) | 1996-04-23 |
| US5720854A (en) | 1998-02-24 |
| US5433018A (en) | 1995-07-18 |
| SK54396A3 (en) | 1998-07-08 |
| CN1047840C (en) | 1999-12-29 |
| JPH09502673A (en) | 1997-03-18 |
| FI961807A0 (en) | 1996-04-26 |
| DE69410284D1 (en) | 1998-06-18 |
| PL314137A1 (en) | 1996-08-19 |
| AU678639B2 (en) | 1997-06-05 |
| JP2743218B2 (en) | 1998-04-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |