H02K 1/276
Magnets embedded in the magnetic core
Official title: Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K1/276 (Magnets embedded in the magnetic core) appears on 2,709 US grants and 3,550 published applications in this corpus.
Search patents in H02K- Granted patents
- 2,709
- Published applications
- 3,550
- Assignees
- 713
- Inventors
- 4,901
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 16 | 0 |
| 1999 | 19 | 0 |
| 2000 | 19 | 0 |
| 2001 | 16 | 10 |
| 2002 | 27 | 41 |
| 2003 | 21 | 40 |
| 2004 | 43 | 40 |
| 2005 | 40 | 32 |
| 2006 | 26 | 51 |
| 2007 | 21 | 57 |
| 2008 | 30 | 52 |
| 2009 | 34 | 69 |
| 2010 | 58 | 89 |
| 2011 | 72 | 76 |
| 2012 | 48 | 126 |
| 2013 | 62 | 180 |
| 2014 | 90 | 177 |
| 2015 | 103 | 170 |
| 2016 | 106 | 173 |
| 2017 | 144 | 158 |
| 2018 | 145 | 207 |
| 2019 | 184 | 246 |
| 2020 | 206 | 278 |
| 2021 | 184 | 230 |
| 2022 | 227 | 269 |
| 2023 | 181 | 229 |
| 2024 | 189 | 234 |
| 2025 | 157 | 170 |
| 2026 | 145 | 146 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- 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
- Rotor, rotary electric machine, and drive device6 Oct 2026US 12,756,252 B2Nidec Corporation
- Electric machine6 Oct 2026US 12,756,284 B2Schaeffler Technologies AG & Co. KG
- Pod drive8 Oct 2026US 2026/0307770 A1Hd Hyundai Electric Co., Ltd.
- 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
- Permanent magnet rotor8 Oct 2026US 2026/0312447 A1ABB Schweiz AG
Most cited
By later US patents
- 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
- Hybrid alternator213US 5,747,909 AEcoair Corp. · 1998
- Magnetically suspended miniature fluid pump and method of designing the same187US 6,447,265 B1The United States of America as represented by the United States National Aeronautics and Space Administration · 2002
- Blood pump having a magnetically suspended rotor171US 6,244,835 B12001