G11B 5/1274
With "composite" cores, i.e. cores composed in some parts of magnetic particles
Official title: {with "composite" cores, i.e. cores composed in some parts of magnetic particles and in some other parts of magnetic metal layers}
G11B5/1274 (With "composite" cores, i.e. cores composed in some parts of magnetic particles) appears on 99 US grants and 45 published applications in this corpus.
Search patents in G11B- Granted patents
- 99
- Published applications
- 45
- Assignees
- 42
- Inventors
- 279
- Latest grant
- 19 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 2 |
| 2003 | 3 | 3 |
| 2004 | 1 | 2 |
| 2005 | 3 | 8 |
| 2006 | 6 | 5 |
| 2007 | 2 | 0 |
| 2008 | 6 | 3 |
| 2009 | 3 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 3 | 6 |
| 2014 | 3 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 3 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 3 |
| 2024 | 3 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Magnetic recording head with stable magnetization of shields19 Nov 2024US 12,148,454 B2Western Digital Technologies, Inc.
- Magnetic head, head gimbal assembly, hard disk drive, and method for processing magnetic head1 Oct 2024US 12,106,786 B2SAE Magnetics (H. K.) Ltd.
- Leading shield for magnetic recording heads23 Jan 2024US 11,881,235 B2Western Digital Technologies, Inc.
- Magnetic recording head with stable magnetization of shields13 Jun 2023US 11,676,627 B2Western Digital Technologies, Inc.
- Magnetic head and magnetic recording device with stacked body material configurations6 Sep 2022US 11,437,059 B2Kabushiki Kaisha Toshiba
- Composite Permanent Magnet26 Sep 2024US 2024/0321294 A1
- Magnetic head, head gimbal assembly, hard disk drive, and method for processing magnetic head1 Feb 2024US 2024/0038261 A1SAE Magnetics (H. K.) Ltd.
- Magnetic recording head with stable magnetization of shields31 Aug 2023US 2023/0274761 A1Western Digital Technologies, Inc.
- Leading Shield For Magnetic Recording Heads24 Aug 2023US 2023/0267953 A1Western Digital Technologies, Inc.
- Magnetic Recording Head with Stable Magnetization of Shields9 Feb 2023US 2023/0044051 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Method of forming a fully wrapped-around shielded PMR writer pole160US 8,533,937 B1Western Digital (Fremont), LLC · 2013
- Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads139US 6,496,328 B1Advanced Research Corporation · 2002
- Integrated bidirectional Recording head micropositioner for magnetic storage devices29US 6,859,346 B12005
- Magnetic recording/reproducing head assembly22US 5,181,149 AHitachi, Ltd. · 1993
- Magnetic disc apparatus20US 5,668,685 AHitachi, Ltd. · 1997