G11B 15/67521
Of cassette with internal belt drive
Official title: {of cassette with internal belt drive}
G11B15/67521 (Of cassette with internal belt drive) appears on 73 US grants and 0 published applications in this corpus.
Search patents in G11B- Granted patents
- 73
- Published applications
- 0
- Assignees
- 34
- Inventors
- 94
- Latest grant
- 15 May 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Magnetic recording/regenerating apparatus15 May 2001US 6,233,112 B1Alps Electric Co., Ltd.
- Door opener for magnetic tape data cartridge20 Mar 2001US 6,204,994 B1Hewlett-Packard Company
- Magnetic recording/reproducing apparatus3 Oct 2000US 6,128,158 AAlps Electric Co., Ltd.
- Loading mechanism for a recording and reproducing apparatus wherein a switch mechanism and the loading mechanism are a single unit19 Sep 2000US 6,122,137 AOnStream, Inc.
- Magnetic recording and reproducing device having a driving roller rotated by a motor of low torque which is press contracted with a transfer roller of a cartridge and transfers a magnetic tape27 Jun 2000US 6,081,405 AAlps Electric Co., Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Cartridge tape drive37US 4,573,091 ACipher Data Products, Inc. · 1986
- Magnetic tape cartridge recorder having releasable cartridge catch arrangement and non-resonant type drive31US 3,976,262 AC. J. Kennedy Company · 1976
- Tape cartridge receptacle29US 4,498,112 AData Electronics, Inc. · 1985
- Tape cartridge drive with cartridge door opening mechanism28US 4,556,923 AData Electronics, Inc. · 1985
- Magnetic tape drive with improved cartridge insertion and withdrawal mechanism25US 4,866,552 AArnitsu Corporation · 1989