G11B 20/1816
Testing
Official title: {Testing}
G11B20/1816 (Testing) appears on 1,722 US grants and 1,230 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,722
- Published applications
- 1,230
- Assignees
- 339
- Inventors
- 2,885
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 12 | 0 |
| 1986 | 12 | 0 |
| 1987 | 15 | 0 |
| 1988 | 15 | 0 |
| 1989 | 10 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 27 | 0 |
| 1993 | 20 | 0 |
| 1994 | 25 | 0 |
| 1995 | 38 | 0 |
| 1996 | 37 | 0 |
| 1997 | 43 | 0 |
| 1998 | 48 | 0 |
| 1999 | 47 | 0 |
| 2000 | 45 | 0 |
| 2001 | 66 | 17 |
| 2002 | 39 | 65 |
| 2003 | 69 | 75 |
| 2004 | 65 | 77 |
| 2005 | 44 | 82 |
| 2006 | 73 | 98 |
| 2007 | 63 | 115 |
| 2008 | 71 | 149 |
| 2009 | 61 | 101 |
| 2010 | 106 | 101 |
| 2011 | 104 | 69 |
| 2012 | 111 | 51 |
| 2013 | 67 | 35 |
| 2014 | 75 | 37 |
| 2015 | 45 | 16 |
| 2016 | 39 | 27 |
| 2017 | 46 | 31 |
| 2018 | 33 | 20 |
| 2019 | 29 | 13 |
| 2020 | 23 | 15 |
| 2021 | 21 | 13 |
| 2022 | 10 | 9 |
| 2023 | 10 | 8 |
| 2024 | 8 | 5 |
| 2025 | 4 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Machine learning defect management in storage devices27 Jan 2026US 12,535,952 B2Western Digital Technologies, Inc.
- Information verification method and related device9 Dec 2025US 12,494,226 B1Huawei Technologies Co., Ltd.
- Data storage device configuration using mutual information29 Jul 2025US 12,374,365 B2Western Digital Technologies, Inc.
- Modulation code and ECC rate optimization using symbol context mutual information27 May 2025US 12,315,534 B2Western Digital Technologies, Inc.
- Magnetic disk device and method25 Feb 2025US 12,236,978 B2Kabushiki Kaisha Toshiba
- Evaluation method, manufacturing method, and disk device23 Apr 2026US 2026/0112390 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and method12 Sep 2024US 2024/0304218 A1Kabushiki Kaisha Toshiba
- Data Storage Device Configuration Using Mutual Information8 Aug 2024US 2024/0265943 A1Western Digital Technologies, Inc.
- Modulation Code and ECC Rate Optimization Using Symbol Context Mutual Information8 Aug 2024US 2024/0265948 A1Western Digital Technologies, Inc.
- Machine learning defect management in storage devices1 Aug 2024US 2024/0256149 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Disk drive employing a multiple-input sequence detector responsive to reliability metrics to improve a retry operation246US 6,405,342 B1Western Digital Technologies, Inc. · 2002
- Disk drive employing data averaging techniques during retry operations to facilitate data recovery238US 7,136,244 B1Western Digital Technologies, Inc. · 2006
- Hard disk drive infant mortality test215US 6,408,406 B1Western Digital Technologies, Inc. · 2002
- Method and apparatus for improved disk access210US 5,088,081 APrime Computer, Inc. · 1992
- Disk drive expediting defect scan when quality metric exceeds a more stringent threshold202US 8,014,094 B1Western Digital Technologies, Inc. · 2011