Kay; Ralph
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kay; Ralph.The latest application filed is for "security device".
- Kay; Ralph - Basingstoke GB
- Kay; Ralph - Hampshire GB
- Kay; Ralph - Maidenhead GB
- Kay; Ralph - Berkshire GB2
| Patent | Date |
|---|---|
| Optically variable security device Grant 7,054,042 - Holmes , et al. May 30, 2 | 2006-05-30 |
| Security device Grant 6,903,850 - Kay , et al. June 7, 2 | 2005-06-07 |
| Security device App 20040100707 - Kay, Ralph ; et al. | 2004-05-27 |
| Security device Grant 6,712,399 - Drinkwater , et al. March 30, 2 | 2004-03-30 |
| Optically variable security device App 20030058491 - Holmes, Brian William ; et al. | 2003-03-27 |
| Manufacture of security tapes and security threads Grant 6,364,983 - Kay April 2, 2 | 2002-04-02 |
| Tamper indicating security item and joining method Grant 5,851,615 - Kay December 22, 1 | 1998-12-22 |
| Image enhancement Grant 5,665,194 - Kay September 9, 1 | 1997-09-09 |
| Decorative article Grant 5,492,370 - Chatwin , et al. February 20, 1 | 1996-02-20 |
| Tamper resisting holographic security seal Grant 5,319,475 - Kay , et al. June 7, 1 | 1994-06-07 |
| Optical device Grant 5,310,222 - Chatwin , et al. May 10, 1 | 1994-05-10 |
| Security card and security card blank Grant 4,747,620 - Kay , et al. May 31, 1 | 1988-05-31 |
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