G11B 5/1874
Specially adapted for composite pole pieces
Official title: {specially adapted for composite pole pieces, e.g. for avoiding "pseudo-gap"}
G11B5/1874 (Specially adapted for composite pole pieces) appears on 17 US grants and 1 published applications in this corpus.
Search patents in G11B- Granted patents
- 17
- Published applications
- 1
- Assignees
- 13
- Inventors
- 60
- Latest grant
- 3 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hyperbolic metamaterial-based near-field transducer for heat assisted magnetic recording head3 Sep 2019US 10,403,310 B1Seagate Technology LLC
- Hyperbolic metamaterial-based near-field transducer for heat assisted magnetic recording head17 Jul 2018US 10,026,421 B1Seagate Technology LLC
- Magnetic head with low non-linear transition shift22 Feb 2000US 6,027,824 AHitachi Metals, Ltd.
- Magnetic head having a C-type core and an I-type core7 Sep 1999US 5,949,626 AMitsumi Electric Co., Ltd.
- Head core slider for rigid magnetic disk drive19 Jul 1994US 5,331,494 ANGK Insulators, Ltd.
Most cited
By later US patents
- Method of manufacturing a magnetic core half19US 5,195,004 ASanyo Electric Co., Ltd. · 1993
- Composite type magnetic head for recording and reproducing high frequency signals17US 4,656,547 AHitachi, Ltd. · 1987
- MIG magnetic head structured to minimize pseudo-gap problem13US 5,270,894 ASanyo Electric Co., Ltd. · 1993
- Magnetic head having reinforcing block11US 4,926,276 ACanon Kabushiki Kaisha · 1990
- Metal-in-gap head with heat resistant layers10US 4,953,049 ASanyo Electric Co., Ltd. · 1990