H01H 29/28
Switches having at least one liquid contact: with level of surface of
Official title: with level of surface of contact liquid displaced by fluid pressure
H01H29/28 (Switches having at least one liquid contact: with level of surface of) appears on 77 US grants and 58 published applications in this corpus.
Search patents in H01H- Granted patents
- 77
- Published applications
- 58
- Assignees
- 20
- Inventors
- 87
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 7 |
| 2004 | 27 | 23 |
| 2005 | 15 | 10 |
| 2006 | 6 | 3 |
| 2007 | 5 | 3 |
| 2008 | 0 | 0 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Liquid metal MEMS switch23 Jul 2024US 12,046,430 B2Texas Instruments Incorporated
- Liquid metal MEMS switch15 Aug 2023US 11,728,111 B2Texas Instruments Incorporated
- Flexible filter element using liquid metal and method of preparing the same30 Jun 2020US 10,697,838 B1Korea Institute of Industrial Technology
- Stabilized liquid-solid electrical contact29 Jan 2026US 2026/0031293 A1Atomic Machines, 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.
- Liquid metal mems switch19 Oct 2023US 2023/0335355 A1Texas Instruments Incorporated
- Chip, method of operating chip, and detection device4 Mar 2021US 2021/0063340 A1Beijing Boe Optoelectronics Technology Co., Ltd.
Most cited
By later US patents
- Electrical contact breaker switch, integrated electrical contact breaker switch, and electrical contact switching method115US 6,323,447 B1Agilent Technologies, Inc. · 2001
- Liquid contact relay incorporating gas-containing finely reticular solid motor element for moving conductive liquid94US 4,419,650 A1983
- Micro-switch heater with varying gas sub-channel cross-section86US 6,559,420 B1Agilent Technologies, Inc. · 2003
- Gas operated switches76US 4,103,135 AInternational Business Machines Corporation · 1978
- Device for switching electrical circuits76US 4,200,779 AMoscovsky Inzhenerno-Fizichesky Institut · 1980