EIDAK CORPORATION

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CAMBRIDGE, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Horizontal pulse augmentation of a video signal
- Patent number 5,394,470
- Issue date Feb 28, 1995
- Eidak Corporation
- William J. Buynak
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Anti-copying video signal processing
- Patent number 5,034,981
- Issue date Jul 23, 1991
- Eidak Corporation
- Eugene Leonard
- G11 - INFORMATION STORAGE
Information Patent Grant
Encoding an optical video disc to inhibit video tape recording
- Patent number 5,003,590
- Issue date Mar 26, 1991
- Eidak Corporation
- Bernard J. Lechner
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modifying a television signal to inhibit recording/reproduction
- Patent number 4,914,694
- Issue date Apr 3, 1990
- Eidak Corporation
- Eugene Leonard
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
74311998 - COPYGUARD
- Serial number 74311998
- Filing date Sep 8, 1992
- EIDAK CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
74218393 - BIG TICKET
- Serial number 74218393
- Filing date Nov 4, 1991
- EIDAK CORPORATION
- 41 - Education
Information Trademark
74138930 - EIDAK
- Serial number 74138930
- Registration number 1675745
- Filing date Feb 13, 1991
- EIDAK CORPORATION
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73748171 - EIDAKIZE
- Serial number 73748171
- Registration number 1534663
- Filing date Aug 23, 1988
- EIDAK CORPORATION
- 38 - Telecommunications