H02K 9/20
Wherein the cooling medium vaporises within the machine casing
Official title: wherein the cooling medium vaporises within the machine casing
H02K9/20 (Wherein the cooling medium vaporises within the machine casing) appears on 220 US grants and 228 published applications in this corpus.
Search patents in H02K- Granted patents
- 220
- Published applications
- 228
- Assignees
- 165
- Inventors
- 584
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 0 |
| 2005 | 0 | 4 |
| 2006 | 1 | 4 |
| 2007 | 1 | 2 |
| 2008 | 4 | 7 |
| 2009 | 2 | 3 |
| 2010 | 8 | 10 |
| 2011 | 2 | 4 |
| 2012 | 5 | 3 |
| 2013 | 6 | 6 |
| 2014 | 0 | 6 |
| 2015 | 7 | 14 |
| 2016 | 7 | 10 |
| 2017 | 9 | 6 |
| 2018 | 6 | 7 |
| 2019 | 6 | 14 |
| 2020 | 8 | 9 |
| 2021 | 7 | 23 |
| 2022 | 9 | 25 |
| 2023 | 18 | 23 |
| 2024 | 25 | 21 |
| 2025 | 21 | 13 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hermetic motor cooling system18 Aug 2026US 12,712,408 B2Tyco Fire & Security GmbH
- Cooling device for an electric drive train component, electric drive train assembly, method for operating a cooling device, method for cooling an electric drive train component, and vehicle30 Jun 2026US 12,671,299 B2Volvo Car Corporation
- Motor having cooling structure16 Jun 2026US 12,658,766 B2Hyundai Motor Company
- Electric motor with integrated cooling9 Jun 2026US 12,651,943 B2Hamilton Sundstrand Corporation
- Winding slot-embedded vapor chambers and heat pipes with endcap heat sinks for electric machines5 May 2026US 12,620,874 B2GM Global Technology Operations LLC
- Method for cooling an electric machine and an electric machine10 Sep 2026US 2026/0269689 A1Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Frameless motor based on porous hydrogel and heat dissipation method thereof27 Aug 2026US 2026/0254303 A1Zhejiang University
- Fluid Cooled Heat Pipe Thermal Management System for an Electric Motor13 Aug 2026US 2026/0238088 A1Marquette University
- Electric motor for a motor vehicle with improved cooling of a rotor thereof9 Jul 2026US 2026/0196904 A1Ferrari S.P. A.
- Cooling assemblies for outer rotor electric motors25 Jun 2026US 2026/0180406 A1Donut Lab Development Oü
Most cited
By later US patents
- Cryogenic fluid transfer joint employing gaseous seals50US 4,018,059 AGeneral Electric Company · 1977
- Phase change heat sink for use in electrical solenoids and motors48US 7,069,979 B2Lockheed Martin Corporation · 2006
- Oil-free liquid chiller44US 6,176,092 B1American Standard Inc. · 2001
- Thermal management system for use with an integrated motor assembly43US 9,030,063 B2Tesla, Inc. · 2015
- Oil-free liquid chiller41US 6,564,560 B2American Standard International Inc. · 2003