H02P 6/22
In a selected direction of rotation
Official title: in a selected direction of rotation
H02P6/22 (In a selected direction of rotation) appears on 250 US grants and 215 published applications in this corpus.
Search patents in H02P- Granted patents
- 250
- Published applications
- 215
- Assignees
- 176
- Inventors
- 520
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 6 |
| 2002 | 10 | 4 |
| 2003 | 4 | 4 |
| 2004 | 3 | 4 |
| 2005 | 6 | 10 |
| 2006 | 6 | 8 |
| 2007 | 9 | 7 |
| 2008 | 6 | 11 |
| 2009 | 7 | 11 |
| 2010 | 5 | 8 |
| 2011 | 9 | 6 |
| 2012 | 5 | 11 |
| 2013 | 11 | 5 |
| 2014 | 7 | 10 |
| 2015 | 4 | 5 |
| 2016 | 7 | 23 |
| 2017 | 15 | 8 |
| 2018 | 14 | 15 |
| 2019 | 15 | 9 |
| 2020 | 9 | 15 |
| 2021 | 10 | 10 |
| 2022 | 12 | 3 |
| 2023 | 5 | 11 |
| 2024 | 7 | 8 |
| 2025 | 7 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Electric motor and motor control173US 8,575,873 B2Nidec Motor Corporation · 2013
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- Control circuit for five-phase brushless DC motor143US 5,744,921 ASiemens Electric Limited · 1998
- Method and apparatus for brushless DC motor speed control124US 4,876,491 AConner Peripherals, Inc. · 1989
- Disk drive optimizing spindle motor torque by adjusting leading phase angle during spin-up111US 8,610,391 B1Western Digital Technologies, Inc. · 2013