G11B 7/24015
Air-sandwiched discs
G11B7/24015 (Air-sandwiched discs) appears on 60 US grants and 0 published applications in this corpus.
Search patents in G11B- Granted patents
- 60
- Published applications
- 0
- Assignees
- 22
- Inventors
- 100
- Latest grant
- 16 Feb 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 12 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical discs with cover sheets and pressure equalization of the enclosed air16 Feb 1999US 5,872,768 AEastman Kodak Company
- Optical discs with cover sheets and dynamic pressure stabilization of the enclosed air30 Jun 1998US 5,774,447 AEastman Kodak Company
- Air sandwiched optical discs with closable pressure relief holes30 Jun 1998US 5,774,448 AEastman Kodak Company
- Optical disk data storage system with multiple write-once dye-based data layers6 May 1997US 5,627,817 AInternational Business Machines Corporation
- Information recording medium and adhesive composition therefor1 Mar 1994US 5,290,877 AMitsui Petrochemical Industries, Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Radiation-sensitive record with protected sensitive surface55US 4,074,282 ANorth American Philips Corporation · 1978
- Information recording medium48US 4,449,138 ATokyo Shibaura Denki Kabushiki Kaisha · 1984
- Method of fabrication of a protected optical disk and a disk obtained by said method30US 4,564,932 AThomson-CSF · 1986
- Optical recording disc29US 4,710,913 AHitachi Maxell, Ltd. · 1987
- Optical disk data storage system with multiple write-once dye-based data layers24US 5,627,817 AInternational Business Machines Corporation · 1997