WHD ELECTRONISCHE PRUEFTECHNIK
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 06, 2008 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 322 Total Citation Count
- Mar 02, 1998 Earliest Filing
- 10 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
Top Patents (by citation)
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Recent Publications
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Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7367592 Marking substance and security markings for testing the authenticity of documentsExpiredJun 15, 99May 06, 08[B42D]
7262604 Method of testing documents provided with optico-diffractively effective markingsExpiredMay 11, 06Aug 28, 07[G01R]
7133124 Security element structure for documents, devices for checking documents with such security elements, method of the use thereofExpiredJul 13, 03Nov 07, 06[G06K]
7129709 Method of testing documents provided with optico-diffractively effective markingsExpiredAug 16, 01Oct 31, 06[G01R]
7116406 Security element structure for documents, devices for checking documents with such security elements, method for the use thereofExpiredApr 24, 98Oct 03, 06[G06K]
5911298 Multi-compact-sensor adapted for mounting at an ascending angleExpiredMar 02, 98Jun 15, 99[G07F]
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