H01H 2213/014
Accumulator chamber
H01H2213/014 (Accumulator chamber) appears on 25 US grants and 18 published applications in this corpus.
Search patents in H01H- Granted patents
- 25
- Published applications
- 18
- Assignees
- 22
- Inventors
- 45
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 2 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 3 |
| 2020 | 0 | 0 |
| 2021 | 4 | 4 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrical key support membrane17 Mar 2026US 12,578,802 B2Apple Inc.
- Push switch2 Apr 2024US 11,948,758 B2Mitsumi Electric Co., Ltd.
- Push switch28 Feb 2023US 11,594,385 B2Mitsumi Electric Co., Ltd.
- Waterproof pressing structure and membrane switch circuit board using the same6 Sep 2022US 11,437,206 B2Lite-On Electronics (Guangzhou) Limited
- Electrical key support membrane26 Jul 2022US 11,397,473 B1Apple Inc.
- Push switch18 May 2023US 2023/0154699 A1Mitsumi Electric Co., Ltd.
- Electrical key support membrane10 Nov 2022US 2022/0357802 A1Apple Inc.
- Waterproof pressing structure and membrane switch circuit board using the same11 Nov 2021US 2021/0350986 A1Lite-On Electronics (Guangzhou) Limited
- Backlight module and operation method thereof11 Nov 2021US 2021/0352786 A1Lite-On Electronics (Guangzhou) Limited
- Push switch28 Oct 2021US 2021/0335559 A1Mitsumi Electric Co., Ltd.
Most cited
By later US patents
- Transparent keyboard switch and array133US 4,017,848 ARockwell International Corporation · 1977
- Keyboard dome stiffener assembly105US 8,253,052 B2Research In Motion Limited · 2012
- Bush switch and method of production thereof46US 4,843,197 AIdec Izumi Corporation · 1989
- Low-profile, rubber keypad30US 4,916,262 AMotorola, Inc. · 1990
- Screened pattern causing gaps around keyboard membrane spacer hole to increase venting and reduced bounce26US 5,218,177 ALexmark International, Inc. · 1993