G11B 17/021
Selecting or spacing of record carriers for introducing the heads
Official title: {Selecting or spacing of record carriers for introducing the heads}
G11B17/021 (Selecting or spacing of record carriers for introducing the heads) appears on 196 US grants and 104 published applications in this corpus.
Search patents in G11B- Granted patents
- 196
- Published applications
- 104
- Assignees
- 52
- Inventors
- 245
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 11 | 15 |
| 2002 | 10 | 6 |
| 2003 | 13 | 16 |
| 2004 | 16 | 6 |
| 2005 | 7 | 4 |
| 2006 | 4 | 13 |
| 2007 | 9 | 11 |
| 2008 | 5 | 6 |
| 2009 | 4 | 5 |
| 2010 | 10 | 3 |
| 2011 | 6 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 2 | 5 |
| 2021 | 4 | 4 |
| 2022 | 5 | 3 |
| 2023 | 4 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Hard disk drive disk media curvature mitigation19 Jun 2025US 2025/0201273 A1Western Digital Technologies, Inc.
- Single arm stepper elevation system4 Jul 2024US 2024/0221780 A1Seagate Technology LLC
- Glass spacer and hard disk drive device29 Feb 2024US 2024/0071419 A1Hoya Corporation
- Method for manufacturing glass spacer, glass spacer, and hard disk drive device13 Jul 2023US 2023/0223047 A1Hoya Corporation
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Most cited
By later US patents
- Magazine for read/write disks and method and device for reading and writing of said read/write disks38US 5,561,657 AShinwa Kabushiki Kaisha · 1996
- Disk drive having multiple disks accessible by a reduced number of read/write heads35US 10,269,380 B1Seagate Technology LLC · 2019
- Stacked flexible record disk storage apparatus having enhanced disk separation35US 3,940,794 AInternational Business Machines Corporation · 1976
- Magazine for read/write disks and method and device for reading and writing said disks34US 5,682,364 AShinwa Kabushiki Kaisha · 1997
- Interactive plural head laser disc system33US 4,701,896 AResolution Research, Inc. · 1987