H01H 29/04
Contacts
Official title: Contacts; Containers for liquid contacts
H01H29/04 (Contacts) appears on 44 US grants and 31 published applications in this corpus.
Search patents in H01H- Granted patents
- 44
- Published applications
- 31
- Assignees
- 28
- Inventors
- 67
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 4 | 2 |
| 2005 | 2 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 3 |
| 2018 | 2 | 4 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stabilized liquid-solid electrical contact21 Oct 2025US 12,451,309 B2Atomic Machines, Inc.
- Stabilized liquid-solid electrical contact22 Jul 2025US 12,368,012 B1Atomic Machines, Inc.
- Hybrid relay2 Apr 2024US 11,948,760 B2Zonit Structured Solutions, LLC
- Low voltage MEMS relay filled with alternative gas mixture to SF612 Dec 2023US 11,842,871 B2Eaton Intelligent Power Limited
- Apparatus and method for providing a time varying voltage22 Nov 2022US 11,506,629 B2Nokia Technologies Oy
- Stabilized liquid-solid electrical contact29 Jan 2026US 2026/0031293 A1Atomic Machines, Inc.
- Liquid contactors for power systems21 Aug 2025US 2025/0266223 A1Caterpillar Inc.
- Stabilized liquid-solid electrical contact17 Jul 2025US 2025/0232932 A1Atomic Machines, Inc.
- Stabilized liquid-solid electrical contact5 Dec 2024US 2024/0404772 A1Atomic Machines, Inc.
- Hybrid relay3 Aug 2023US 2023/0245844 A1Zonit Structured Solutions, LLC
Most cited
By later US patents
- Mercury switch with non-wettable electrodes90US 4,652,710 AThe United States of America as represented by the United States Department of Energy · 1987
- Current conducting devices employing mesoscopically conductive liquids78US 6,180,873 B2Polaron Engineering Limited · 2001
- Gas operated switches76US 4,103,135 AInternational Business Machines Corporation · 1978
- Mercury tilt switch and method of manufacture74US 4,797,519 A1989
- Attitude sensing electrical switch71US 6,396,012 B12002