G11B 5/5927
Helicoidal tracks
Official title: {Helicoidal tracks}
G11B5/5927 (Helicoidal tracks) appears on 6 US grants and 2 published applications in this corpus.
Search patents in G11B- Granted patents
- 6
- Published applications
- 2
- Assignees
- 4
- Inventors
- 18
- Latest grant
- 31 Oct 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetic recording/reproducing apparatus31 Oct 2006US 7,130,147 B2Matsushita Electric Industrial Co., Ltd.
- Control system of tape travel for a magnetic recording and reproducing apparatus23 Jul 2002US 6,424,483 B1Matsushita Electric Industrial Co., Ltd.
- Method and apparatus for reducing data loss errors in a magnetic tape device8 Aug 2000US 6,101,060 AStorage Technology Corporation
- Tape transport system using variable tape speed to achieve constant data speed and advance detection and correction of tracking errors to reduce data loss errors5 Oct 1999US 5,963,389 AStorage Technology Corporation
- Apparatus and method for controlling recording and reproduction in digital video cassette tape recorder24 Dec 1996US 5,587,789 AGoldstar Co., Ltd.
Most cited
By later US patents
- Apparatus and method for controlling recording and reproduction in digital video cassette tape recorder22US 5,587,789 AGoldstar Co., Ltd. · 1996
- Tape transport system using variable tape speed to achieve constant data speed and advance detection and correction of tracking errors to reduce data loss errors12US 5,963,389 AStorage Technology Corporation · 1999
- Method and apparatus for reducing data loss errors in a magnetic tape device7US 6,101,060 AStorage Technology Corporation · 2000
- Control system of tape travel for a magnetic recording and reproducing apparatus2US 6,424,483 B1Matsushita Electric Industrial Co., Ltd. · 2002
- Magnetic recording/reproducing apparatus1US 7,130,147 B2Matsushita Electric Industrial Co., Ltd. · 2006