H02K 9/24
Protection against failure of cooling arrangements
Official title: Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
H02K9/24 (Protection against failure of cooling arrangements) appears on 93 US grants and 67 published applications in this corpus.
Search patents in H02K- Granted patents
- 93
- Published applications
- 67
- Assignees
- 60
- Inventors
- 257
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 1 |
| 2009 | 4 | 1 |
| 2010 | 1 | 4 |
| 2011 | 0 | 7 |
| 2012 | 3 | 3 |
| 2013 | 5 | 5 |
| 2014 | 4 | 5 |
| 2015 | 1 | 2 |
| 2016 | 4 | 2 |
| 2017 | 3 | 4 |
| 2018 | 2 | 6 |
| 2019 | 6 | 6 |
| 2020 | 5 | 5 |
| 2021 | 3 | 1 |
| 2022 | 3 | 3 |
| 2023 | 1 | 1 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for controlling the temperature of an electric motor, and fluid supply device1 Sep 2026US 12,726,082 B2Schaeffler Technologies AG & Co. KG
- Motor cooling system and motor cooling monitoring method4 Feb 2025US 12,218,571 B2Meidensha Corporation
- Electrical apparatus with a duct having a fire wall11 Jul 2023US 11,698,604 B2Ricoh Company, Ltd.
- Fluid apparatus15 Nov 2022US 11,502,630 B2Daikin Industries, Ltd.
- Method and equipment for cooling generators7 Jun 2022US 11,355,998 B2
- Heat dissipation device and power generation apparatus23 Jul 2026US 2026/0214834 A1Sungrow Power Supply Co., Ltd.
- Motor cooling system and motor cooling monitoring method19 Dec 2024US 2024/0421666 A1Meidensha Corporation
- Method for controlling the temperature of an electric motor, and fluid supply device3 Oct 2024US 2024/0333101 A1Schaeffler Technologies AG & Co. KG
- Power generator cooler performance monitoring device26 Sep 2024US 2024/0322652 A1Toshiba Energy Systems & Solutions Corporation
- Oil Temperature Control Method, Controller, Powertrain, and Electric Vehicle18 May 2023US 2023/0150352 A1Huawei Digital Power Technologies Co., Ltd.
Most cited
By later US patents
- Linear motor with improved cooling81US 5,783,877 AAnorad Corporation · 1998
- Apparatus for monitoring hydrogen gas leakage into the stator coil water cooling system of a hydrogen cooled electric generator43US 4,766,557 AWestinghouse Electric Corp. · 1988
- Redundant cooling system with two cooling circuits for an electric motor31US 7,569,954 B2Siemens Aktiengesellschaft · 2009
- Cryongenic cooling refrigeration system and method having open-loop short term cooling for a superconducting machine30US 6,442,949 B1General Electric Company · 2002
- Generator stator winding diagnostic system28US 4,698,756 AWestinghouse Electric Corp. · 1987