G11B 19/28
Speed controlling, regulating, or indicating
Official title: Speed controlling, regulating, or indicating (G11B19/24 takes precedence)
G11B19/28 (Speed controlling, regulating, or indicating) appears on 1,016 US grants and 540 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,016
- Published applications
- 540
- Assignees
- 238
- Inventors
- 1,583
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 11 | 0 |
| 1987 | 16 | 0 |
| 1988 | 16 | 0 |
| 1989 | 30 | 0 |
| 1990 | 19 | 0 |
| 1991 | 25 | 0 |
| 1992 | 21 | 0 |
| 1993 | 19 | 0 |
| 1994 | 24 | 0 |
| 1995 | 27 | 0 |
| 1996 | 27 | 0 |
| 1997 | 28 | 0 |
| 1998 | 34 | 0 |
| 1999 | 42 | 0 |
| 2000 | 47 | 0 |
| 2001 | 35 | 19 |
| 2002 | 40 | 74 |
| 2003 | 46 | 55 |
| 2004 | 32 | 49 |
| 2005 | 41 | 67 |
| 2006 | 76 | 61 |
| 2007 | 33 | 33 |
| 2008 | 33 | 33 |
| 2009 | 32 | 22 |
| 2010 | 29 | 18 |
| 2011 | 27 | 16 |
| 2012 | 21 | 12 |
| 2013 | 16 | 8 |
| 2014 | 14 | 20 |
| 2015 | 32 | 7 |
| 2016 | 11 | 11 |
| 2017 | 11 | 5 |
| 2018 | 7 | 4 |
| 2019 | 4 | 4 |
| 2020 | 8 | 7 |
| 2021 | 7 | 2 |
| 2022 | 3 | 1 |
| 2023 | 2 | 4 |
| 2024 | 9 | 6 |
| 2025 | 4 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Speed control of actuator arm and spindle in a data storage device17 Mar 2026US 12,579,999 B2Western Digital Technologies, Inc.
- Voltage slew control of fine actuators during discharge2 Sep 2025US 12,406,697 B1Western Digital Technologies, Inc.
- Disk device3 Jun 2025US 12,322,423 B2Kabushiki Kaisha Toshiba
- Head velocity derating for data storage devices including disk media11 Feb 2025US 12,223,982 B1Western Digital Technologies, Inc.
- Enhancing spin up and spin down times for data storage devices14 Jan 2025US 12,198,722 B2Western Digital Technologies, Inc.
- Speed control of actuator arm and spindle in a data storage device13 Nov 2025US 2025/0349320 A1Western Digital Technologies, Inc.
- Disk device30 Jan 2025US 2025/0036294 A1Kabushiki Kaisha Toshiba
- Enhancing spin up and spin down times for data storage devices14 Nov 2024US 2024/0379123 A1Western Digital Technologies, Inc.
- Maintaining consistent location for spindle interrupts when spindle motor switches modes25 Jul 2024US 2024/0249748 A1Western Digital Technologies, Inc.
- Magnetic disk device and control method28 Mar 2024US 2024/0105216 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Optical reproducing method215US 6,549,497 B2Hitachi, Ltd. · 2003
- Parallel drive array storage system210US 4,870,643 AMicropolis Corporation · 1989
- Disk drive having a sector clock that is synchronized to the angular speed of the spindle motor195US 7,126,776 B1Western Digital Technologies, Inc. · 2006
- Disk drive having a high performance access mode and a lower performance archive mode190US 7,599,139 B1Western Digital Technologies, Inc. · 2009
- Selectable format computer disk copier machine186US 4,494,156 AMedia Systems Technology, Inc. · 1985