G11B 3/707
For video discs with grooves
Official title: {for video discs with grooves}
G11B3/707 (For video discs with grooves) appears on 8 US grants and 0 published applications in this corpus.
Search patents in G11B- Granted patents
- 8
- Published applications
- 0
- Assignees
- 8
- Inventors
- 23
- Latest grant
- 20 Jun 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Information recording medium and method for recording information to the same20 Jun 1995US 5,426,632 APioneer Electronic Corporation
- Process for preparation of optical disk substrate29 Nov 1988US 4,788,015 ADainippon Ink and Chemical, Inc.
- Process for producing scratch resistant antistatic sound and picture carrier5 Mar 1985US 4,503,094 AGFO Gesellschaft Fer Oberflachentechnik mbH
- Scratch resistant antistatic sound and picture carrier and process for its production24 Apr 1984US 4,444,849 AGesellschaft fur Oberflachentechnik mbH
- Method for making a video disc9 Aug 1983US 4,397,805 ADiscovision Associates
No published applications in this class yet.
Most cited
By later US patents
- Process for preparation of optical disk substrate15US 4,788,015 ADainippon Ink and Chemical, Inc. · 1988
- Metal coating for video discs14US 4,004,080 ARCA Corporation · 1977
- Method for making a video disc13US 4,397,805 ADiscovision Associates · 1983
- Information recording medium and method for recording information to the same8US 5,426,632 APioneer Electronic Corporation · 1995
- Smooth groove formation method employing spin coating of negative replica of inscribed disc4US 4,113,897 ARCA Corporation · 1978