G11B 19/26
Speed-changing arrangements
Official title: Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
G11B19/26 (Speed-changing arrangements) appears on 298 US grants and 219 published applications in this corpus.
Search patents in G11B- Granted patents
- 298
- Published applications
- 219
- Assignees
- 117
- Inventors
- 603
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 10 | 0 |
| 1998 | 16 | 0 |
| 1999 | 18 | 0 |
| 2000 | 14 | 0 |
| 2001 | 18 | 8 |
| 2002 | 12 | 31 |
| 2003 | 16 | 23 |
| 2004 | 19 | 28 |
| 2005 | 22 | 42 |
| 2006 | 24 | 28 |
| 2007 | 12 | 12 |
| 2008 | 19 | 10 |
| 2009 | 18 | 9 |
| 2010 | 14 | 7 |
| 2011 | 9 | 4 |
| 2012 | 6 | 1 |
| 2013 | 3 | 2 |
| 2014 | 2 | 1 |
| 2015 | 6 | 3 |
| 2016 | 4 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 3 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Data storage device with closed loop extended park mode during spin down operation7 May 2024US 11,978,482 B2Western Digital Technologies, Inc.
- Magnetic disk device25 Apr 2023US 11,636,876 B2Kabushiki Kaisha Toshiba
- Method of controlling hard disk and electronic device9 Mar 2021US 10,942,560 B2EMC IP Holding Company LLC
- Data storage device operated at different spin speeds2 Feb 2021US 10,910,011 B1Western Digital Technologies, Inc.
- Moveable motor and cover for mobile drive unit turntable26 Jan 2021US 10,902,880 B2Amazon Technologies, Inc.
- Data storage device with closed loop extended park mode during spin down operation20 Jul 2023US 2023/0230616 A1Western Digital Technologies, Inc.
- Magnetic disk device27 Oct 2022US 2022/0343948 A1Kabushiki Kaisha Toshiba
- Moveable motor and cover for mobile drive unit turntable26 Sep 2019US 2019/0295591 A1Amazon Technologies, Inc.
- Phonograph Playing Vehicle8 Aug 2019US 2019/0244633 A1
- Method of controlling hard disk and electronic device26 Jul 2018US 2018/0210537 A1EMC IP Holding Company LLC
Most cited
By later US patents
- Disk drive spinning down disk to a spin rate based on spin-up parameter127US 8,743,502 B1Western Digital Technologies, Inc. · 2014
- Disk drive having optimized spindle speed for environment60US 5,764,430 AInternational Business Machines Corporation · 1998
- Information record medium, apparatus for recording the same and apparatus for reproducing the same43US 6,236,804 B1Pioneer Electronic Corporation · 2001
- Optical disk motor servo and method for closed loop speed control40US 5,870,363 AOak Technology, Inc. · 1999
- Recordable optical disk and optical disk recording device utilizing pre-recorded recording speed information40US 6,894,961 B1Yamaha Corporation · 2005