G11B 23/50
Reconditioning of record carriers
Official title: Reconditioning of record carriers; Cleaning of record carriers {; Carrying-off electrostatic charges}(G11B3/58 takes precedence)
G11B23/50 (Reconditioning of record carriers) appears on 880 US grants and 307 published applications in this corpus.
Search patents in G11B- Granted patents
- 880
- Published applications
- 307
- Assignees
- 297
- Inventors
- 1,593
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 14 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 21 | 0 |
| 1982 | 21 | 0 |
| 1983 | 21 | 0 |
| 1984 | 16 | 0 |
| 1985 | 21 | 0 |
| 1986 | 19 | 0 |
| 1987 | 29 | 0 |
| 1988 | 31 | 0 |
| 1989 | 27 | 0 |
| 1990 | 29 | 0 |
| 1991 | 28 | 0 |
| 1992 | 33 | 0 |
| 1993 | 25 | 0 |
| 1994 | 29 | 0 |
| 1995 | 26 | 0 |
| 1996 | 19 | 0 |
| 1997 | 27 | 0 |
| 1998 | 40 | 0 |
| 1999 | 36 | 0 |
| 2000 | 24 | 0 |
| 2001 | 29 | 11 |
| 2002 | 31 | 52 |
| 2003 | 34 | 36 |
| 2004 | 36 | 40 |
| 2005 | 32 | 27 |
| 2006 | 23 | 13 |
| 2007 | 13 | 24 |
| 2008 | 7 | 19 |
| 2009 | 7 | 10 |
| 2010 | 11 | 10 |
| 2011 | 15 | 11 |
| 2012 | 11 | 6 |
| 2013 | 11 | 5 |
| 2014 | 5 | 5 |
| 2015 | 7 | 12 |
| 2016 | 6 | 6 |
| 2017 | 6 | 2 |
| 2018 | 4 | 2 |
| 2019 | 3 | 3 |
| 2020 | 5 | 2 |
| 2021 | 3 | 2 |
| 2022 | 4 | 3 |
| 2023 | 1 | 1 |
| 2024 | 2 | 3 |
| 2025 | 1 | 1 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnetic disk device and control method29 Sep 2026US 12,749,508 B1Kabushiki Kaisha Toshiba
- Work cleaning device and cleaning method18 Aug 2026US 12,711,991 B2NHK Spring Co., Ltd.
- Magnetic recording and reproduction device and control method of the same9 Jun 2026US 12,651,612 B2Kabushiki Kaisha Toshiba
- Tape drive error recovery procedure selection based on humidity5 May 2026US 12,620,414 B2International Business Machines Corporation
- Tape drive cleaning device18 Nov 2025US 12,475,927 B1International Business Machines Corporation
- Magnetic recording and reproduction device and control method of the same29 Jan 2026US 2026/0031108 A1Kabushiki Kaisha Toshiba
- Tape drive cleaning device20 Nov 2025US 2025/0356880 A1International Business Machines Corporation
- Work cleaning device and cleaning method24 Oct 2024US 2024/0355359 A1NHK Spring Co., Ltd.
- Tape drive error recovery procedure selection based on humidity25 Jul 2024US 2024/0249750 A1International Business Machines Corporation
- Optical disc unit for ultraviolet sterilizer, method of manufacturing the same, and ultraviolet sterilizer including the same11 Jul 2024US 2024/0231117 A1Hatbit Illucom Co., Ltd
Most cited
By later US patents
- Selectively textured magnetic recording media160US 5,062,021 AMagnetic Peripherals Inc. · 1991
- Photoreactive surface processing160US 5,669,979 AUVTech Systems, Inc. · 1997
- Thin film magnetic recording head for minimizing undershoots and a method for manufacturing the same112US 5,452,166 AApplied Magnetics Corporation · 1995
- Magnetic tape, its cleaning method, and optical servotrack forming/cleaning apparatus112US 7,803,471 B1Hitachi Maxell, Ltd. · 2010
- Apparatus for controlling humidity in a disk drive106US 4,620,248 AMagnetic Peripherals Inc. · 1986