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Patente

Referenziert von

Zitiert von PatentEingetragenAusgestelltUrsprünglich Bevollmächtigter Titel
US399006520. Febr. 19752. Nov. 1976The Magnavox CompanyTheft detection system
US408780224. Mai 19762. Mai 1978Method and apparatus for electronic surveillance of precisely defined control zone
US41186939. Mai 19773. Okt. 1978Knogo CorporationMethod and apparatus for producing uniform electromagnetic fields in an article detection system
US41398447. Okt. 197713. Febr. 1979Sensormatic Electronics CorporationSurveillance method and system with electromagnetic carrier and plural range limiting signals
US42064533. März 19783. Juni 1980Method and apparatus for electronic surveillance
US42120023. März 19788. Juli 1980Method and apparatus for selective electronic surveillance
US42491675. Juni 19793. Febr. 1981Magnavox Government and Industrial Electronics CompanyApparatus and method for theft detection system having different frequencies
US427409019. Febr. 198016. Juni 1981Knogo CorporationDetection of articles in adjacent passageways
US430853010. Mai 197829. Dez. 1981N.V. Nederlandsche Apparatenfabriek NEDAPDetection system forming wide gates with superior spatial selectivity
US431924814. Jan. 19809. März 1982American Electronic Laboratories, Inc.Integrated spiral antenna-detector device
US43204027. Juli 198016. März 1982General Dynamics Corp./Electronics DivisionMultiple ring microstrip antenna
US44306457. Apr. 19817. Febr. 1984Sensormatic Electronics CorporationSurveillance system employing a dual function floor mat radiator
US447134429. Apr. 198211. Sept. 1984ICI Americas Inc.Dual frequency anti-theft system
US44751084. Aug. 19822. Okt. 1984Allied CorporationElectronically tunable microstrip antenna
US467393229. Dez. 198316. Juni 1987Revlon, Inc.Rapid inventory data acquistion system
US47046021. Okt. 19853. Nov. 1987Intermodulation and Safety System ABMethod and system for detecting an indicating device
US47981759. Okt. 198617. Jan. 1989Alfa-Laval Agri, Inc.Electronic identification system
US485558317. Aug. 19878. Aug. 1989Figgie International, Inc.Structure and method of making combination proximity/insertion identification cards
US486216020. März 198729. Aug. 1989Revlon, Inc.Item identification tag for rapid inventory data acquisition system
US509922718. Dez. 198924. März 1992Indala CorporationProximity detecting apparatus
US511516028. Aug. 198919. Mai 1992GTE ProductsEasily encodable surface acoustic wave (SAW) security devices
US524192323. Juli 19927. Sept. 1993Pole/Zero CorporationTransponder control of animal whereabouts
US53862145. Apr. 199331. Jan. 1995Fujitsu LimitedElectronic circuit device
US546509926. Aug. 19947. Nov. 1995Nippon Information Industry CorporationDetectable device and movable item detecting system
US557008213. Okt. 199529. Okt. 1996Remote wetness sensor for diapers
US561952911. Juli 19958. Apr. 1997Mitsubishi Denki Kabushiki KaishaNon-contact IC card and non-contact IC card reader/writer
US583825317. Mai 199517. Nov. 1998Accu-Sort Systems, Inc.Radio frequency identification label
US597039325. Febr. 199719. Okt. 1999Polytechnic University
Omnitek Research & Development Inc.
Integrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes
US606430823. Okt. 199716. Mai 2000Pole/Zero CorporationRF signaling system and system for controlling the whereabouts of animals using same
US615092117. Okt. 199721. Nov. 2000PinPoint CorporationArticle tracking system
US616664330. Sept. 199926. Dez. 2000Method and apparatus for controlling the whereabouts of an animal
US644604929. Sept. 19983. Sept. 2002Pole/Zero CorporationMethod and apparatus for transmitting a digital information signal and vending system incorporating same
US64834279. März 200019. Nov. 2002RF Technologies, Inc.Article tracking system
US666709226. Sept. 200223. Dez. 2003International Paper CompanyRFID enabled corrugated structures
US67005445. Febr. 20022. März 2004Near-field plasma reader
US68128242. März 20002. Nov. 2004RF Technologies, Inc.Method and apparatus combining a tracking system and a wireless communication system
US692217324. Okt. 200326. Juli 2005Reconfigurable scanner and RFID system using the scanner
US705836227. Sept. 19996. Juni 2006Polytechnic University
Omnitek Research & Development, Inc.
Integrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes
US714880426. Jan. 200512. Dez. 2006Checkpoint Systems, Inc.System and method for detecting EAS/RFID tags using step listen
US715197926. Nov. 200219. Dez. 2006International Paper CompanySystem and method for tracking inventory
US781808819. Okt. 200519. Okt. 2010Rush Tracking Systems, LLCSystem and method for tracking inventory
US815438826. Mai 200510. Apr. 2012Gemalto SASynchronous-phase contactless demodulation method, and associated demodulator and reader