G11B 23/0007
Circuits or methods for reducing noise, for correction of distortion, or for
Official title: {Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information, (volume compression or expansion circuits per se H03G7/00)}
G11B23/0007 (Circuits or methods for reducing noise, for correction of distortion, or for) appears on 161 US grants and 6 published applications in this corpus.
Search patents in G11B- Granted patents
- 161
- Published applications
- 6
- Assignees
- 70
- Inventors
- 265
- Latest grant
- 24 Mar 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 14 | 0 |
| 1978 | 9 | 0 |
| 1979 | 13 | 0 |
| 1980 | 10 | 0 |
| 1981 | 12 | 0 |
| 1982 | 13 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 14 | 0 |
| 1999 | 19 | 0 |
| 2000 | 14 | 0 |
| 2001 | 8 | 1 |
| 2002 | 4 | 2 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 3 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus for balanced shield shunts, leads and pads for electrical noise reduction in read heads24 Mar 2009US 7,508,613 B2Hitachi Global Storage Technologies Netherlands B. V.
- Method and apparatus for balanced shield shunts, leads and pads for electrical noise reduction in read heads17 Apr 2007US 7,206,154 B2Hitachi Global Storage Technologies Netherlands B. V.
- Current to voltage converter amplifier for use in a data reading device11 Oct 2005US 6,954,407 B1Deutsche Thomson-Brandt GmbH
- Bidirectional read-while-write data recording system5 Jul 2005US 6,914,756 B2Imation Corp.
- Magnetic disc storage apparatus7 Jun 2005US 6,903,894 B2Hitachi, Ltd.
- Method and Apparatus For Balanced Shield Shunts, Leads and Pads For Electrical Noise Reduction in Read Heads13 Sep 2007US 2007/0211373 A1Hitachi Global Storage Technologies Netherlands B. V.
- Method and apparatus for balanced shield shunts, leads and pads for electrical noise reduction in read heads25 Mar 2004US 2004/0057146 A1International Business Machines Corporation
- Bidirectional read-while-write data recording system14 Aug 2003US 2003/0151855 A1Imation Corp.
- Floppy disk drive preventing data errors from occurring on side of main controller coupled via set cable27 Jun 2002US 2002/0080511 A1Alps Electric Co., Ltd.
- Magnetic disc storage apparatus13 Jun 2002US 2002/0071199 A1Hitachi, Ltd.
Most cited
By later US patents
- Multi-tapped coil having tapped segments cascaded for amplification for improving signal-to-noise ratio149US 6,204,998 B1Read-Rite Corporation · 2001
- Multi-layered integrated conductor trace array interconnect structure having optimized electrical parameters140US 5,995,328 AQuantum Corporation · 1999
- Suspension with multi-layered integrated conductor trace array for optimized electrical parameters139US 5,737,152 AQuantum Corporation · 1998
- Suspension with biaxially shielded conductor trace array95US 5,796,552 AQuantum Corporation · 1998
- EMI noise cancellation in disk drive having MR read head and single-ended preamplifier67US 6,088,235 AQuantum Corporation · 2000