H01H 9/52
Cooling of switch parts
Official title: Cooling of switch parts (cooling of contacts H01H1/62)
H01H9/52 (Cooling of switch parts) appears on 325 US grants and 304 published applications in this corpus.
Search patents in H01H- Granted patents
- 325
- Published applications
- 304
- Assignees
- 142
- Inventors
- 802
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 2 |
| 2002 | 3 | 4 |
| 2003 | 7 | 7 |
| 2004 | 6 | 6 |
| 2005 | 4 | 6 |
| 2006 | 6 | 7 |
| 2007 | 5 | 7 |
| 2008 | 4 | 10 |
| 2009 | 7 | 6 |
| 2010 | 3 | 7 |
| 2011 | 5 | 4 |
| 2012 | 7 | 10 |
| 2013 | 5 | 9 |
| 2014 | 10 | 10 |
| 2015 | 6 | 13 |
| 2016 | 11 | 16 |
| 2017 | 20 | 19 |
| 2018 | 16 | 14 |
| 2019 | 17 | 17 |
| 2020 | 18 | 31 |
| 2021 | 23 | 11 |
| 2022 | 16 | 25 |
| 2023 | 16 | 15 |
| 2024 | 13 | 15 |
| 2025 | 12 | 19 |
| 2026 | 7 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Key structure6 Oct 2026US 12,755,908 B2Acer Incorporated
- Electrical protection devices comprising an integrated switching module6 Oct 2026US 12,755,918 B2Schneider Electric Industries SAS
- Pyrotechnic circuit breaker7 Apr 2026US 12,597,573 B2Autoliv Development AB
- Hybrid circuit breaker with improved current capacity per device size24 Mar 2026US 12,586,739 B2Eaton Intelligent Power Limited
- Semiconductor circuit breaker24 Feb 2026US 12,562,321 B2Ls Electric Co., Ltd.
- Cooling device and housing for a switching arrangement, and switching arrangement17 Sep 2026US 2026/0279699 A1Siemens Aktiengesellschaft
- Spacer for front access circuit breakers10 Sep 2026US 2026/0269150 A1Vertiv Corporation
- Fixing assembly and switching element comprising same20 Aug 2026US 2026/0243520 A1LG Innotek Co., Ltd.
- Electromagnetic relay20 Aug 2026US 2026/0245821 A1OMRON Corporation
- Electric circuit breaker device6 Aug 2026US 2026/0229432 A1Daicel Corporation
Most cited
By later US patents
- Load control system205US 4,833,339 ALutron Electronics Co., Inc. · 1989
- Dual-mode non-isolated corded system for transportable cordless power tools148US 6,296,065 B1Black & Decker Inc. · 2001
- Wall box dimmer switch with plural remote control switches126US 4,563,592 ALutron Electronics Co., Inc. · 1986
- Universal control apparatus and methods110US 7,400,239 B2Simply Automated, Incorporated · 2008
- Dual-mode non-isolated corded system for transportable cordless power tools104US 6,675,912 B2Black & Decker Inc. · 2004