H02K 19/00
Synchronous motors or generators
Official title: Synchronous motors or generators (having permanent magnets H02K21/00)
H02K19/00 (Synchronous motors or generators) appears on 1,890 US grants and 1,637 published applications in this corpus.
Search patents in H02K- Granted patents
- 1,890
- Published applications
- 1,637
- Assignees
- 693
- Inventors
- 3,237
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 14 | 0 |
| 1978 | 20 | 0 |
| 1979 | 13 | 0 |
| 1980 | 11 | 0 |
| 1981 | 17 | 0 |
| 1982 | 13 | 0 |
| 1983 | 13 | 0 |
| 1984 | 21 | 0 |
| 1985 | 15 | 0 |
| 1986 | 12 | 0 |
| 1987 | 17 | 0 |
| 1988 | 21 | 0 |
| 1989 | 19 | 0 |
| 1990 | 26 | 0 |
| 1991 | 22 | 0 |
| 1992 | 23 | 0 |
| 1993 | 25 | 0 |
| 1994 | 23 | 0 |
| 1995 | 22 | 0 |
| 1996 | 24 | 0 |
| 1997 | 28 | 0 |
| 1998 | 43 | 0 |
| 1999 | 57 | 0 |
| 2000 | 54 | 0 |
| 2001 | 46 | 9 |
| 2002 | 32 | 40 |
| 2003 | 23 | 46 |
| 2004 | 50 | 46 |
| 2005 | 34 | 52 |
| 2006 | 41 | 60 |
| 2007 | 32 | 60 |
| 2008 | 34 | 54 |
| 2009 | 45 | 41 |
| 2010 | 46 | 56 |
| 2011 | 39 | 53 |
| 2012 | 39 | 56 |
| 2013 | 29 | 60 |
| 2014 | 42 | 82 |
| 2015 | 33 | 63 |
| 2016 | 36 | 90 |
| 2017 | 74 | 116 |
| 2018 | 72 | 97 |
| 2019 | 110 | 117 |
| 2020 | 128 | 94 |
| 2021 | 84 | 79 |
| 2022 | 70 | 71 |
| 2023 | 42 | 50 |
| 2024 | 60 | 63 |
| 2025 | 50 | 49 |
| 2026 | 31 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor rotor, self-starting synchronous reluctance motor comprising same, and compressor6 Oct 2026US 12,756,283 B2Gree Electric Appliances, Inc. of Zhuhai
- Synthetic generator synchronization6 Oct 2026US 12,756,339 B2Google Inc.
- Rotor for an externally excited synchronous machine29 Sep 2026US 12,749,951 B2Mahle International GmbH
- Method and apparatus for cooling a rotor assembly22 Sep 2026US 12,744,427 B2GE Aviation Systems LLC
- Electric motor having rotor and squirrel cage winding22 Sep 2026US 12,744,438 B2Sew-Eurodrive GmbH & Co. KG
- Electric Machine, Electric Axle Drive, Motor Vehicle, And Method For Manufacturing An Electric Machine8 Oct 2026US 2026/0312475 A1ZF Friedrichshafen AG
- Drive axle for an electric vehicle24 Sep 2026US 2026/0291338 A1ZF Friedrichshafen AG
- Synchronous electric machine with fixed clawed inductor17 Sep 2026US 2026/0280362 A1
- Electromechanical actuator comprising a compact and low-noise synchronous reluctance motor27 Aug 2026US 2026/0254297 A1Somfy Activites SA
- Electromagnetic reaction wheel13 Aug 2026US 2026/0238101 A1National Tsing Hua University
Most cited
By later US patents
- Methods and apparatus for increasing power of permanent magnet motors1,432US 6,777,838 B22004
- Polyphase brushless DC and AC synchronous machines223US 5,334,899 A1994
- Hybrid alternator213US 5,747,909 AEcoair Corp. · 1998
- System and method for providing low voltage 3-phase power in a vehicle132US 7,521,814 B2Oshkosh Truck Corporation · 2009
- Alternator for an automotive vehicle130US 5,998,903 ADenso Corporation · 1999