H02K 21/021
Means for mechanical adjustment of the excitation flux
Official title: {Means for mechanical adjustment of the excitation flux}
H02K21/021 (Means for mechanical adjustment of the excitation flux) appears on 361 US grants and 398 published applications in this corpus.
Search patents in H02K- Granted patents
- 361
- Published applications
- 398
- Assignees
- 194
- Inventors
- 712
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 13 |
| 2003 | 6 | 6 |
| 2004 | 6 | 4 |
| 2005 | 4 | 2 |
| 2006 | 4 | 11 |
| 2007 | 1 | 11 |
| 2008 | 7 | 14 |
| 2009 | 10 | 11 |
| 2010 | 10 | 11 |
| 2011 | 13 | 13 |
| 2012 | 9 | 21 |
| 2013 | 10 | 15 |
| 2014 | 9 | 19 |
| 2015 | 8 | 14 |
| 2016 | 15 | 5 |
| 2017 | 14 | 22 |
| 2018 | 14 | 22 |
| 2019 | 22 | 29 |
| 2020 | 25 | 30 |
| 2021 | 25 | 27 |
| 2022 | 25 | 22 |
| 2023 | 18 | 23 |
| 2024 | 16 | 29 |
| 2025 | 26 | 11 |
| 2026 | 17 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Rotor, electric machine and kit of parts20 Aug 2026US 2026/0246325 A1Schaeffler Technologies AG & Co. KG
- Magnetic hysteresis brake with adjustable air gap13 Aug 2026US 2026/0238081 A1Safran Electronics & Defense Actuation
- Rotor and electric machine6 Aug 2026US 2026/0229974 A1Schaeffler Technologies AG & Co. KG
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