DONALD WILLIAM TOMKINS

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LANCASTER, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Security device having optically variable device portion and method...
- Patent number 9,279,927
- Issue date Mar 8, 2016
- Opsec Security Group, Inc.
- Donald William Tomkins
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Optically variable devices, security device and article employing s...
- Patent number 9,025,251
- Issue date May 5, 2015
- Opsec Security Group, Inc.
- Paul Dunn
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
SECURITY DEVICE HAVING OPTICALLY VARIABLE DEVICE PORTION AND METHOD...
- Publication number 20140232974
- Publication date Aug 21, 2014
- OpSec Security Group, Inc.
- DONALD WILLIAM TOMKINS
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
OPTICALLY VARIABLE DEVICES, SECURITY DEVICE AND ARTICLE EMPLOYING S...
- Publication number 20110317271
- Publication date Dec 29, 2011
- OPSEC SECURITY GROUP, INC.
- Paul Dunn
- G07 - CHECKING-DEVICES
Information Patent Application
Diffraction-based optical grating structure and method of creating...
- Publication number 20060018021
- Publication date Jan 26, 2006
- Applied Opsec, Inc.
- Donald William Tomkins
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER