H02K 1/27
Rotor cores with permanent magnets
H02K1/27 (Rotor cores with permanent magnets) appears on 6,660 US grants and 8,473 published applications in this corpus.
Search patents in H02K- Granted patents
- 6,660
- Published applications
- 8,473
- Assignees
- 1,996
- Inventors
- 11,836
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 12 | 0 |
| 1983 | 11 | 0 |
| 1984 | 20 | 0 |
| 1985 | 10 | 0 |
| 1986 | 27 | 0 |
| 1987 | 33 | 0 |
| 1988 | 17 | 0 |
| 1989 | 23 | 0 |
| 1990 | 24 | 0 |
| 1991 | 24 | 0 |
| 1992 | 32 | 0 |
| 1993 | 26 | 0 |
| 1994 | 26 | 0 |
| 1995 | 28 | 0 |
| 1996 | 36 | 0 |
| 1997 | 39 | 0 |
| 1998 | 65 | 0 |
| 1999 | 58 | 0 |
| 2000 | 66 | 0 |
| 2001 | 52 | 18 |
| 2002 | 71 | 103 |
| 2003 | 52 | 109 |
| 2004 | 101 | 121 |
| 2005 | 108 | 122 |
| 2006 | 102 | 149 |
| 2007 | 59 | 154 |
| 2008 | 82 | 152 |
| 2009 | 94 | 187 |
| 2010 | 134 | 233 |
| 2011 | 172 | 192 |
| 2012 | 124 | 250 |
| 2013 | 146 | 329 |
| 2014 | 188 | 359 |
| 2015 | 205 | 373 |
| 2016 | 214 | 403 |
| 2017 | 300 | 496 |
| 2018 | 334 | 547 |
| 2019 | 511 | 552 |
| 2020 | 513 | 599 |
| 2021 | 431 | 525 |
| 2022 | 468 | 640 |
| 2023 | 393 | 508 |
| 2024 | 491 | 567 |
| 2025 | 413 | 443 |
| 2026 | 282 | 342 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnetization method and magnetization apparatus6 Oct 2026US 12,755,884 B2Toyota Jidosha Kabushiki Kaisha
- Crystalline radical polymerizable composition for fixing a magnet of a rotating electric machine rotor core, a rotating electric machine rotor core using the composition, and a method of manufacturing the rotating electric machine rotor core6 Oct 2026US 12,756,246 B2Aisin Corporation
- Motor rotor structure and motor6 Oct 2026US 12,756,249 B2Splash Pool & Spa, Inc.
- Rotor for a permanent magnet electric machine6 Oct 2026US 12,756,250 B2GM Global Technology Operations LLC
- Rotor apparatus for an electric machine6 Oct 2026US 12,756,251 B2Jaguar Land Rover Limited
- Pod drive8 Oct 2026US 2026/0307770 A1Hd Hyundai Electric Co., Ltd.
- Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine8 Oct 2026US 2026/0311916 A1Mitsubishi Electric Corporation
- Rotary electric machine8 Oct 2026US 2026/0312442 A1Denso Corporation
- Rotor core, rotor, and electric motor8 Oct 2026US 2026/0312445 A1Fanuc Corporation
- Laminated core, rotor, and manufacturing method of laminated core8 Oct 2026US 2026/0312446 A1Nippon Steel Corporation
Most cited
By later US patents
- Methods and apparatus for increasing power of permanent magnet motors1,432US 6,777,838 B22004
- Electric machine having an integrally continuous stator winding and stator slot bridges1,193US 6,936,948 B2Pratt & Whitney Canada Corp. · 2005
- Architecture for electric machine1,149US 7,583,063 B2Pratt & Whitney Canada Corp. · 2009
- Blood pump having a magnetically suspended rotor250US 6,447,266 B2The United States of America as represented by the United States National Aeronautics and Space Administration · 2002
- Magnetically suspended miniature fluid pump and method of designing the same240US 6,015,272 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2000