H02K 9/227
Heat sinks
Official title: {Heat sinks}
H02K9/227 (Heat sinks) appears on 958 US grants and 1,197 published applications in this corpus.
Search patents in H02K- Granted patents
- 958
- Published applications
- 1,197
- Assignees
- 474
- Inventors
- 2,397
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 5 |
| 2002 | 9 | 13 |
| 2003 | 10 | 8 |
| 2004 | 9 | 11 |
| 2005 | 8 | 16 |
| 2006 | 8 | 6 |
| 2007 | 6 | 17 |
| 2008 | 13 | 17 |
| 2009 | 10 | 14 |
| 2010 | 13 | 31 |
| 2011 | 9 | 19 |
| 2012 | 12 | 26 |
| 2013 | 23 | 59 |
| 2014 | 24 | 56 |
| 2015 | 29 | 48 |
| 2016 | 38 | 57 |
| 2017 | 42 | 60 |
| 2018 | 41 | 67 |
| 2019 | 70 | 94 |
| 2020 | 74 | 108 |
| 2021 | 82 | 70 |
| 2022 | 74 | 110 |
| 2023 | 71 | 71 |
| 2024 | 91 | 95 |
| 2025 | 78 | 73 |
| 2026 | 39 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating electrical machine6 Oct 2026US 12,756,273 B2Mitsubishi Electric Corporation
- 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
- Fan casing, blower assembly, and vehicle air conditioning system15 Sep 2026US 12,738,802 B2Luxshare Intelligent Manufacture Technology (Changshu) Co., Ltd
- Heat dissipation structures for printed circuit board (pcb) stator assemblies1 Oct 2026US 2026/0302892 A1Airgreening (Canada) Inc.
- Geared motor17 Sep 2026US 2026/0280389 A1Itoh Denki Co., Ltd.
- Electric Motor10 Sep 2026US 2026/0269690 A1Innomotics GmbH
- Systems and methods for tilt propellers with tilt actuator gearbox and integrated inverter27 Aug 2026US 2026/0249978 A1Archer Aviation Inc.
- Aircraft propulsion unit with main and auxiliary cooling system27 Aug 2026US 2026/0250006 A1Rolls-Royce Deutschland Ltd & Co KG
Most cited
By later US patents
- Polyphase brushless DC and AC synchronous machines223US 5,334,899 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
- Motor having stator with insulator of high heat-conductivity94US 6,509,665 B1Matsushita Electric Industial Co., Ltd. · 2003
- Apparatus for containment and cooling of a core within a housing86US 5,331,238 ASundstrand Corporation · 1994