G11B 5/41
Cleaning of heads
Official title: Cleaning of heads {(of record carriers G11B23/50)}
G11B5/41 (Cleaning of heads) appears on 441 US grants and 161 published applications in this corpus.
Search patents in G11B- Granted patents
- 441
- Published applications
- 161
- Assignees
- 140
- Inventors
- 758
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 8 | 0 |
| 1986 | 15 | 0 |
| 1987 | 20 | 0 |
| 1988 | 8 | 0 |
| 1989 | 12 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 19 | 0 |
| 1996 | 11 | 0 |
| 1997 | 13 | 0 |
| 1998 | 22 | 0 |
| 1999 | 16 | 0 |
| 2000 | 30 | 0 |
| 2001 | 22 | 4 |
| 2002 | 9 | 17 |
| 2003 | 12 | 6 |
| 2004 | 11 | 15 |
| 2005 | 8 | 7 |
| 2006 | 11 | 18 |
| 2007 | 6 | 6 |
| 2008 | 8 | 11 |
| 2009 | 6 | 14 |
| 2010 | 9 | 4 |
| 2011 | 3 | 0 |
| 2012 | 4 | 5 |
| 2013 | 2 | 4 |
| 2014 | 5 | 2 |
| 2015 | 8 | 8 |
| 2016 | 6 | 6 |
| 2017 | 8 | 6 |
| 2018 | 8 | 5 |
| 2019 | 7 | 3 |
| 2020 | 5 | 1 |
| 2021 | 6 | 1 |
| 2022 | 2 | 5 |
| 2023 | 4 | 5 |
| 2024 | 2 | 2 |
| 2025 | 3 | 2 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic recording device29 Sep 2026US 12,749,501 B2Kabushiki Kaisha Toshiba
- Active humidity control using heat-responsive water-releasing substances in data storage devices18 Aug 2026US 12,711,998 B2Western Digital Technologies, Inc.
- Tape drive error recovery procedure selection based on humidity5 May 2026US 12,620,414 B2International Business Machines Corporation
- Magnetic recording medium including fatty ester and fatty acid ester7 Apr 2026US 12,597,441 B2Sony Group Corporation
- Tape drive device and method of detecting state of head unit of tape drive device25 Nov 2025US 12,482,490 B2NHK Spring Co., Ltd.
- Magnetic head cleaning device and magnetic tape device3 Sep 2026US 2026/0260663 A1NEC Platforms, Ltd.
- Magnetic recording and reproduction device and adjustment method of the same16 Jul 2026US 2026/0204282 A1Kabushiki Kaisha Toshiba
- Magnetic recording device18 Jun 2026US 2026/0171115 A1Kabushiki Kaisha Toshiba
- Tape drive device and method of detecting state of head unit of tape drive device26 Feb 2026US 2026/0057904 A1NHK Spring Co., Ltd.
- Magnetic recording medium30 Oct 2025US 2025/0336418 A1Sony Group Corporation
Most cited
By later US patents
- Photoreactive surface processing160US 5,669,979 AUVTech Systems, Inc. · 1997
- Method and circuitry for in-situ measurement of transducer/recording medium clearance and transducer magnetic instability135US 5,130,866 AInternational Business Machines Corporation · 1992
- Systems and methods for protecting a sensitive device from corrosion113US 7,656,602 B2International Business Machines Corporation · 2010
- Thin film magnetic recording head for minimizing undershoots and a method for manufacturing the same112US 5,452,166 AApplied Magnetics Corporation · 1995
- Stick for applying a liquid91US 4,218,155 AEtablissements Armor, S.A. · 1980