H01H 33/664
Contacts
Official title: Contacts; Arc-extinguishing means, e.g. arcing rings
H01H33/664 (Contacts) appears on 415 US grants and 287 published applications in this corpus.
Search patents in H01H- Granted patents
- 415
- Published applications
- 287
- Assignees
- 102
- Inventors
- 689
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 12 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 4 |
| 2002 | 8 | 7 |
| 2003 | 6 | 11 |
| 2004 | 9 | 10 |
| 2005 | 8 | 1 |
| 2006 | 2 | 4 |
| 2007 | 3 | 0 |
| 2008 | 0 | 7 |
| 2009 | 1 | 3 |
| 2010 | 3 | 8 |
| 2011 | 1 | 10 |
| 2012 | 16 | 11 |
| 2013 | 9 | 9 |
| 2014 | 10 | 12 |
| 2015 | 5 | 17 |
| 2016 | 15 | 16 |
| 2017 | 18 | 15 |
| 2018 | 12 | 10 |
| 2019 | 15 | 11 |
| 2020 | 12 | 15 |
| 2021 | 16 | 11 |
| 2022 | 7 | 28 |
| 2023 | 20 | 25 |
| 2024 | 22 | 20 |
| 2025 | 22 | 13 |
| 2026 | 9 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 33/6644Having coil-like electrical connections between contact rod and the proper contact88
- H01H 33/6642Having cup-shaped contacts, the cylindrical wall of which being provided with inclined75
- H01H 33/6643Having disc-shaped contacts subdivided in petal-like segments74
- H01H 33/6646Having non flat disc-like contact surface42
- H01H 33/6641Making use of a separate coil37
- H01H 33/6647Having fixed middle contact and two movable contacts21
- H01H 2033/6648Contacts containing flexible partsIndexing code19
Recent patents
- SF6 free gas insulated disconnector with limited arcing volume29 Sep 2026US 12,749,638 B2GE Vernova Infrastructure Technology LLC
- Vacuum interrupter25 Aug 2026US 12,718,998 B2Mitsubishi Electric Corporation
- Capacitor harvester14 Jul 2026US 12,683,104 B2Hubbell Incorporated
- Electric power interrupter and method thereof23 Jun 2026US 12,665,150 B2Technologies Mindcore Inc.
- Interrupter and air circuit breaker comprising same2 Jun 2026US 12,646,675 B2Ls Electric Co., Ltd.
- Capacitor harvester24 Sep 2026US 2026/0290728 A1
- Capacitor harvester17 Sep 2026US 2026/0279705 A1
- Reinforced vacuum interrupter electrode, and making same from clad composite raw material starting stock20 Aug 2026US 2026/0245816 A1
- Vacuum circuit breaker6 Aug 2026US 2026/0229430 A1Hd Hyundai Electric Co., Ltd.
- Welding arc-enduring component to structural or mechanical component for assembly of vacuum interrupter30 Jul 2026US 2026/0221359 A1
Most cited
By later US patents
- High voltage vacuum type circuit interrupter121US 4,568,804 AJoslyn Mfg. and Supply Co. · 1986
- Hybrid medium voltage circuit breaker98US 5,155,315 AMerlin Gerin · 1992
- Hybrid circuit breaker with axial blowout coil87US 5,280,144 AMerlin Gerin · 1994
- Current interchange for vacuum capacitor switch56US 5,597,992 ACooper Industries, Inc. · 1997
- Tubular supported axial magnetic field interrupter52US 4,871,888 A1989