DIGITAL RECORDING CORPORATION
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Nov 11, 1986 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 257 Total Citation Count
- Jan 20, 1978 Earliest Filing
- 9 Expired/Abandoned/Withdrawn Patents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
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4622284 Process of using metal azide recording media with laserExpiredMar 01, 84Nov 11, 86[G03C, G01D]
4545653 Focusing elements and system for producing a prescribed energy distribution along an axial focal zoneExpiredOct 14, 83Oct 08, 85[G02B]
4460989 Apparatus for improving focus during playback of an optical data recordExpiredJun 22, 81Jul 17, 84[G11B]
4426696 Optical playback apparatus focusing system for producing a prescribed energy distribution along an axial focal zoneExpiredJan 07, 81Jan 17, 84[G02B]
4224481 Compression and expansion circuitry for a recording and playback systemExpiredAug 16, 78Sep 23, 80[H04N, G11B, G11C]
Top Inventors for This Owner
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