Inventor · disambiguated record
Ralph Kay
Also filed as: KAY RALPH
11 granted patents·986 citations·filing 1986–2001
94Inventor score
Top patents by PatentIndex Score
11 records- 0197US5492370ADecorative articleDE LA RUE HOLOGRAPHICS LTD·Filed 1992·Granted Feb 20, 1996·248 cites·29 claims
- 0296US7054042B2Optically variable security deviceRUE DE INT LTD·Filed 2001·Granted May 30, 2006·67 cites·49 claims
- 0394US6903850B2Security deviceRUE DE INT LTD·Filed 2001·Granted Jun 7, 2005·74 cites·24 claims
- 0493US5310222AOptical deviceDE LA RUE HOLOGRAPHICS LTD·Filed 1990·Granted May 10, 1994·169 cites·21 claims
- 0590US6712399B1Security deviceRUE DE INT LTD·Filed 2000·Granted Mar 30, 2004·126 cites·23 claims
- 0690US5319475ATamper resisting holographic security sealDE LA RUE HOLOGRAPHICS LTD·Filed 1991·Granted Jun 7, 1994·121 cites·28 claims
- 0787US4747620ASecurity card and security card blankDE LA RUE CO PLC·Filed 1986·Granted May 31, 1988·74 cites·32 claims
- 0876US5851615ATamper indicating security item and joining methodRUE DE INT LTD·Filed 1996·Granted Dec 22, 1998·52 cites·20 claims
- 0970US5665194AImage enhancementDE LA RUE HOLOGRAPHICS LTD·Filed 1993·Granted Sep 9, 1997·16 cites·21 claims
- 1068US6364983B1Manufacture of security tapes and security threadsRUE DE INT LTD·Filed 1998·Granted Apr 2, 2002·27 cites·29 claims
- 1144US6344245B1Security device manufactureRUE DE INT LTD·Filed 1999·Granted Feb 5, 2002·12 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →