G11B 11/1056
Switching or mechanically reversing the magnetic field generator
Official title: {Switching or mechanically reversing the magnetic field generator}
G11B11/1056 (Switching or mechanically reversing the magnetic field generator) appears on 55 US grants and 3 published applications in this corpus.
Search patents in G11B- Granted patents
- 55
- Published applications
- 3
- Assignees
- 29
- Inventors
- 115
- Latest grant
- 15 Dec 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electric motor control apparatus and electric supercharging apparatus using electric motor control apparatus15 Dec 2015US 9,212,602 B2Mitsubishi Electric Corporation
- Magneto-optical disk apparatus that can adjust position of magnetic head with respect to optical head6 Nov 2001US 6,314,062 B1Sanyo Electric Co., Ltd.
- Magneto-optical disc apparatus with means to change the angle and distance between a magnetic field generating source and a magneto-optical disc3 Apr 2001US 6,212,136 B1Sony Corporation
- Method for correcting tilt of magnet-optical readable medium apparatus to be used for its practice and magnet-optical readable medium9 Jan 2001US 6,172,950 B2Fujitsu Limited
- Translational, bias-field device for a magneto-optical system17 Oct 2000US 6,134,193 AEastman Kodak Company
- Electric motor control apparatus and electric supercharging apparatus using electric motor control apparatus3 Jan 2013US 2013/0004334 A1Mitsubishi Electric Corporation
- Reproducing method of magneto-optical storage medium, and magneto-optical storage apparatus using the method20 Oct 2005US 2005/0232088 A1Fujitsu Limited
- Magnetic field generator for magneto-optics memory apparatus with reduced magnetic field reversal time19 Jul 2001US 2001/0008501 A1
Most cited
By later US patents
- Method and apparatus for thermo magnetic recording/erasing information with preselected magnetic field switching35US 4,712,203 AHitachi, Ltd. · 1987
- Bias magnetic field abnormality detecting apparatus which controls recording and erasing of information32US 4,979,158 AOlympus Optical Co., Ltd. · 1990
- Rewritable storage apparatus using first and second bias magnetic fields29US 5,590,096 AFujitsu Limited · 1996
- Thin bias magnet unit for magneto-optical recording device25US 5,777,952 AHitachi Computer Peripherals Co., Ltd. · 1998
- External magnetic field inverting apparatus for magneto-optical disc apparatus20US 4,748,606 ASony Corporation · 1988