|
| US3945482 | 14. Dez. 1973 | 23. März 1976 | | Orthogonal input keyboards |
| US4661005 | 16. Jan. 1984 | 28. Apr. 1987 | Creative Associates | Spittable keyboard for word processing, typing and other information input systems |
| US4715736 | 9. Apr. 1986 | 29. Dez. 1987 | FWM Enterprises, Inc. | Process for determining optimum keyboard formats for a given language |
| US4913573 | 18. Aug. 1988 | 3. Apr. 1990 | | Alpha-numeric keyboard |
| US4917516 | 15. Aug. 1988 | 17. Apr. 1990 | | Combination computer keyboard and mouse data entry system |
| US5003301 | 23. Juni 1988 | 26. März 1991 | | Key arrangement and method of inputting information from a key arrangement |
| US5166669 | 25. März 1991 | 24. Nov. 1992 | | Key arrangements and methods of use |
| US5302040 | 14. Dez. 1992 | 12. Apr. 1994 | Typerite Keyboard Corporation | Ergonomic keyboard apparatus and method of using same |
| US5339097 | 6. März 1992 | 16. Aug. 1994 | | Computer keyboard |
| US5360280 | 12. Febr. 1993 | 1. Nov. 1994 | Metamorfyx | Ergonomic keyboard including arcuate elongated keys |
| US5372441 | 13. Juli 1993 | 13. Dez. 1994 | TypeRight Keyboard Corporation | Ergonomic keyboard apparatus with left and right key section separated by an irregularly shaped space |
| US5416498 | 17. Mai 1993 | 16. Mai 1995 | Ergonomics, Inc. | Prehensile positioning computer keyboard |
| US5454652 | 12. Nov. 1993 | 3. Okt. 1995 | Lexmark International, Inc. | Adjustable keyboard |
| US5500643 | 26. Aug. 1993 | 19. März 1996 | | One-hand prehensile keyboard |
| US5553953 | 31. Okt. 1994 | 10. Sept. 1996 | | Ergonomic keyboard |
| US5626428 | 18. Sept. 1995 | 6. Mai 1997 | Brother Kogyo Kabushiki Kaisha | Keyboard device |
| US5836705 | 1. Febr. 1996 | 17. Nov. 1998 | | Keyboard arrangement to maximize typing speed and data entry and to ease transition from a qwerty keyboard |
| US6031469 | 12. Nov. 1996 | 29. Febr. 2000 | | Ergonomic computer keyboard |
| US6042282 | 10. Aug. 1998 | 28. März 2000 | Metamorfyx, L.L.C. | Ergonomic keyboard |
| US6467979 | 26. Okt. 1998 | 22. Okt. 2002 | Metamorfyx | Ergonomic keyboard |
| US6840690 | 18. Okt. 2002 | 11. Jan. 2005 | Metamorfyx | Ergonomic keyboard |
| US7205982 | 24. Dez. 1999 | 17. Apr. 2007 | | Character input keyboard |
| US7507043 | 8. Nov. 2004 | 24. März 2009 | Metamorfyx | Ergonomic keyboard |
| US8083424 | 12. März 2009 | 27. Dez. 2011 | Metamorfyx, LLC | Ergonomic keyboard |
| USD357911 | 4. Mai 1994 | 2. Mai 1995 | Ergonomics, Inc. | Computer keyboard |
| USD517553 | 4. Nov. 2004 | 21. März 2006 | Seng Kee Teo | Keyboard |
