Inventor · disambiguated record
Donald William Tomkins
Also filed as: TOMKINS DONALD W · TOMKINS DONALD WILLIAM
5 granted patents·1 pending application·32 citations·filing 1981–2013
74Inventor score
Top patents by PatentIndex Score
6 records- 0158US9279927B2Security device having optically variable device portion and method of making the sameOPSEC SECURITY GROUP INC·Filed 2013·Granted Mar 8, 2016·0 cites·8 claims
- 0244US6316082B1Laminate structureAPI GROUP PLC·Filed 1998·Granted Nov 13, 2001·21 cites·40 claims
- 0335US4416695AHydraulic cementsNAT RES DEV·Filed 1981·Granted Nov 22, 1983·8 cites·29 claims
- 0435US2006018021A1Diffraction-based optical grating structure and method of creating the sameAPPLIED OPSEC INC·Filed 2005·Application pending·0 cites
- 0534US9025251B2Optically variable devices, security device and article employing same, and associated method of creating sameDUNN PAUL·Filed 2010·Granted May 5, 2015·0 cites·12 claims
- 0630US4917497AMethod of and apparatus for the positional detection of objectsHOLTRONIC TECHNOLOGIES LTD·Filed 1987·Granted Apr 17, 1990·3 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Donald William Tomkins files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →