H02K 9/22
Arrangements for cooling or ventilating: by solid heat conducting material embedded in
Official title: by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K9/22 (Arrangements for cooling or ventilating: by solid heat conducting material embedded in) appears on 1,462 US grants and 1,837 published applications in this corpus.
Search patents in H02K- Granted patents
- 1,462
- Published applications
- 1,837
- Assignees
- 692
- Inventors
- 3,589
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 12 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 14 | 0 |
| 2000 | 4 | 0 |
| 2001 | 13 | 5 |
| 2002 | 16 | 25 |
| 2003 | 16 | 12 |
| 2004 | 16 | 21 |
| 2005 | 14 | 26 |
| 2006 | 19 | 18 |
| 2007 | 12 | 31 |
| 2008 | 19 | 29 |
| 2009 | 21 | 23 |
| 2010 | 23 | 48 |
| 2011 | 21 | 29 |
| 2012 | 17 | 39 |
| 2013 | 30 | 81 |
| 2014 | 30 | 103 |
| 2015 | 45 | 78 |
| 2016 | 61 | 80 |
| 2017 | 64 | 93 |
| 2018 | 62 | 95 |
| 2019 | 96 | 115 |
| 2020 | 100 | 148 |
| 2021 | 112 | 132 |
| 2022 | 114 | 165 |
| 2023 | 120 | 119 |
| 2024 | 126 | 134 |
| 2025 | 114 | 116 |
| 2026 | 68 | 72 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotating electrical machine6 Oct 2026US 12,756,273 B2Mitsubishi Electric Corporation
- Electric motor having an angle sensor29 Sep 2026US 12,749,952 B2Sew-Eurodrive GmbH & Co. KG
- Rotary electrical machine22 Sep 2026US 12,744,423 B2Mitsubishi Electric Corporation
- Air cooling apparatus for electric machine22 Sep 2026US 12,744,433 B2ANDRITZ HYDRO GmbH
- Rotary electric machine15 Sep 2026US 12,738,795 B2Mitsubishi Electric Corporation
- Engine cooling fan motor for vehicle8 Oct 2026US 2026/0312466 A1New Motech Co., Ltd.
- High speed electrical machine1 Oct 2026US 2026/0302870 A1Celeroton Turbocell AG
- Heat dissipation structures for printed circuit board (pcb) stator assemblies1 Oct 2026US 2026/0302892 A1Airgreening (Canada) Inc.
- Linear motion device and electronic component mounting device24 Sep 2026US 2026/0291355 A1Panasonic Intellectual Property Management Co., Ltd.
- Geared motor17 Sep 2026US 2026/0280389 A1Itoh Denki Co., Ltd.
Most cited
By later US patents
- Polyphase brushless DC and AC synchronous machines223US 5,334,899 A1994
- Polyphase brushless DC and AC synchronous machines134US 5,334,898 A1994
- Pump assembly for delivering liquids and gases103US 4,834,624 AGrundfos International A/S · 1989
- Control motor integrated with a direct current motor and a speed control circuit100US 5,119,466 AASMO Co.LTD · 1992
- Rotor for brushless electromotor and method for making same95US 5,369,325 ASeiko Epson Corporation · 1994