H01H 37/74
Switches in which only the opening movement or only the closing movement
Official title: Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
H01H37/74 (Switches in which only the opening movement or only the closing movement) appears on 604 US grants and 507 published applications in this corpus.
Search patents in H01H- Granted patents
- 604
- Published applications
- 507
- Assignees
- 318
- Inventors
- 1,076
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 15 | 0 |
| 1978 | 12 | 0 |
| 1979 | 8 | 0 |
| 1980 | 12 | 0 |
| 1981 | 21 | 0 |
| 1982 | 13 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 11 | 0 |
| 1999 | 16 | 0 |
| 2000 | 15 | 0 |
| 2001 | 16 | 2 |
| 2002 | 9 | 8 |
| 2003 | 11 | 8 |
| 2004 | 10 | 15 |
| 2005 | 5 | 17 |
| 2006 | 10 | 16 |
| 2007 | 8 | 12 |
| 2008 | 12 | 10 |
| 2009 | 10 | 11 |
| 2010 | 11 | 22 |
| 2011 | 6 | 17 |
| 2012 | 10 | 18 |
| 2013 | 7 | 29 |
| 2014 | 15 | 23 |
| 2015 | 19 | 29 |
| 2016 | 23 | 25 |
| 2017 | 29 | 23 |
| 2018 | 26 | 25 |
| 2019 | 25 | 26 |
| 2020 | 19 | 25 |
| 2021 | 29 | 27 |
| 2022 | 23 | 28 |
| 2023 | 18 | 17 |
| 2024 | 15 | 37 |
| 2025 | 13 | 20 |
| 2026 | 11 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Irreversible, normally closed, solid-state thermal switch6 Oct 2026US 12,755,913 B1National Technology & Engineering Solutions of Sandia, LLC
- Thermal cutoff device pellet composition6 Oct 2026US 12,755,914 B2Therm-O-Disc, Incorporated
- Protective element6 Oct 2026US 12,755,915 B2Dexerials Corporation
- Protection element and battery pack28 Apr 2026US 12,614,823 B2Dexerials Corporation
- Overvoltage protection device and method of manufacturing such a device7 Apr 2026US 12,597,540 B2Citel
- Protecting device and method for manufacturing protecting device3 Sep 2026US 2026/0260831 A1Dexerials Corporation
- Protecting device27 Aug 2026US 2026/0253829 A1Dexerials Corporation
- Thermo activator with built-in power source13 Aug 2026US 2026/0233043 A1
- Protection circuit for an electrical installation, associated protection device and protection method30 Jul 2026US 2026/0221368 A1Mersen France Sb SAS
- Fuse element and protection element30 Jul 2026US 2026/0221369 A1Dexerials Corporation
Most cited
By later US patents
- Fuse wire switch98US 4,906,962 ABabcock, Inc. · 1990
- Circuit protection device91US 6,430,019 B1Ferraz · 2002
- Automatic switching-off structure for protecting electronic device from burning82US 5,708,553 A1998
- Lightning arrestor76US 4,288,833 AGeneral Electric Company · 1981
- Electrical switching device for thermal and overvoltage protection72US 4,085,397 AEmerson Electric Co. · 1978