G11B 5/2452
Where the dimensions of the effective gap are controlled
Official title: {where the dimensions of the effective gap are controlled}
G11B5/2452 (Where the dimensions of the effective gap are controlled) appears on 52 US grants and 13 published applications in this corpus.
Search patents in G11B- Granted patents
- 52
- Published applications
- 13
- Assignees
- 25
- Inventors
- 78
- Latest grant
- 7 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 5 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 5 | 1 |
| 2022 | 3 | 2 |
| 2023 | 3 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Magnetic head including multiple magnetic layers and magnetic recording device7 Nov 2023US 11,810,601 B2Kabushiki Kaisha Toshiba
- Magnetic recording device and magnetic recording method utilizing assisted magnetic recording31 Jan 2023US 11,568,890 B2Kabushiki Kaisha Toshiba
- Energy assisted magnetic recording head having improved areal density capability17 Jan 2023US 11,557,315 B2Western Digital Technologies, Inc.
- Magnetic head and magnetic recording device with stacked body material configurations6 Sep 2022US 11,437,059 B2Kabushiki Kaisha Toshiba
- Dual wire assisted magnetic recording24 May 2022US 11,341,990 B1Seagate Technology LLC
- Magnetic head and magnetic recording device2 Feb 2023US 2023/0031273 A1Kabushiki Kaisha Toshiba
- Magnetic recording device and magnetic recording method19 May 2022US 2022/0157336 A1Kabushiki Kaisha Toshiba
- Energy Assisted Magnetic Recording Head Having Improved Areal Density Capability7 Apr 2022US 2022/0108715 A1Western Digital Technologies, Inc.
- Magnetic head and magnetic recording device13 May 2021US 2021/0142821 A1Kabushiki Kaisha Toshiba
- Magnetic head and magnetic recording and reproducing device28 May 2020US 2020/0168244 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Magnetic read/write head having a magnetic short circuit23US 5,057,957 ATDK Corporation · 1991
- Magnetic control of a transducer signal transfer zone to effect tracking of a path along a record medium23US 5,189,572 AAmpex Corporation · 1993
- Two-gap magnetic read/write head22US 5,729,413 AAmpex Corporation · 1998
- Wide-write, narrow-read, single-gap magnetic head21US 5,012,375 AMitsubishi Denki Kabushiki Kaisha · 1991
- Magnetic head for recording and reproduction20US 4,646,184 AYe Data Inc. · 1987