G11B 5/1871
Shaping or contouring of the transducing or guiding surface
Official title: {Shaping or contouring of the transducing or guiding surface}
G11B5/1871 (Shaping or contouring of the transducing or guiding surface) appears on 667 US grants and 335 published applications in this corpus.
Search patents in G11B- Granted patents
- 667
- Published applications
- 335
- Assignees
- 132
- Inventors
- 1,125
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 16 | 0 |
| 1991 | 20 | 0 |
| 1992 | 14 | 0 |
| 1993 | 14 | 0 |
| 1994 | 12 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 19 | 0 |
| 1998 | 44 | 0 |
| 1999 | 32 | 0 |
| 2000 | 24 | 0 |
| 2001 | 29 | 14 |
| 2002 | 25 | 32 |
| 2003 | 25 | 30 |
| 2004 | 31 | 28 |
| 2005 | 15 | 20 |
| 2006 | 22 | 30 |
| 2007 | 20 | 27 |
| 2008 | 18 | 12 |
| 2009 | 19 | 9 |
| 2010 | 15 | 9 |
| 2011 | 9 | 7 |
| 2012 | 9 | 7 |
| 2013 | 11 | 4 |
| 2014 | 8 | 11 |
| 2015 | 18 | 13 |
| 2016 | 17 | 16 |
| 2017 | 22 | 12 |
| 2018 | 15 | 19 |
| 2019 | 17 | 21 |
| 2020 | 20 | 3 |
| 2021 | 8 | 4 |
| 2022 | 9 | 2 |
| 2023 | 1 | 3 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Low friction planar servo writer head16 Jun 2026US 12,658,200 B2Western Digital Technologies, Inc.
- Non-contact tape head16 Jun 2026US 12,658,208 B2Western Digital Technologies, Inc.
- Magnetic disk device22 Apr 2025US 12,283,294 B1Kabushiki Kaisha Toshiba
- Magnetic head and magnetic disk device comprising the same11 Jun 2024US 12,009,016 B2Kabushiki Kaisha Toshiba
- Magnetic write head with flux blockade structure2 Apr 2024US 11,948,608 B2International Business Machines Corporation
- Non-Contact Tape Head11 Jun 2026US 2026/0162676 A1Western Digital Technologies, Inc.
- Low Friction Planar Servo Writer Head11 Dec 2025US 2025/0378846 A1Western Digital Technologies, Inc.
- Magnetic head and magnetic disk device comprising the same23 Nov 2023US 2023/0377603 A1Kabushiki Kaisha Toshiba
- Heat-assisted magnetic recording (hamr) head with main pole having recess for plasmonic material3 Aug 2023US 2023/0245681 A1Western Digital Technologies, Inc.
- Magnetic write head with flux blockade structure18 May 2023US 2023/0154488 A1International Business Machines Corporation
Most cited
By later US patents
- Dual electrical lapping guides with common bonding pad189US 7,551,406 B1Western Digital (Fremont), LLC · 2009
- Perpendicular recording head with shaped pole surfaces for higher linear data densities170US 7,869,160 B1Western Digital (Fremont), LLC · 2011
- Pole tip with sides flared at media-facing surface163US 7,133,253 B1Western Digital (Fremont), LLC · 2006
- Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing162US 6,504,675 B1Seagate Technology LLC · 2003
- Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer161US 7,310,204 B1Western Digital (Fremont), LLC · 2007