H01H 2217/016
Pressure reduction membrane
Official title: Pressure reduction membrane; Spreader layer
H01H2217/016 (Pressure reduction membrane) appears on 27 US grants and 17 published applications in this corpus.
Search patents in H01H- Granted patents
- 27
- Published applications
- 17
- Assignees
- 25
- Inventors
- 38
- Latest grant
- 5 Dec 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 2 | 3 |
| 2017 | 3 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Keyswitch structure5 Dec 2017US 9,837,220 B2Darfon Electronics Corp.
- Keyboard comprising multiple stabilized tile-shaped keys28 Nov 2017US 9,831,051 B2fm marketing gmbh
- Input device11 Jul 2017US 9,704,668 B2Alps Electric Co., Ltd.
- Push switch2 Aug 2016US 9,406,460 B2Panasonic Intellectual Property Management Co., Ltd.
- Operation element and operation device14 Jun 2016US 9,364,749 B2Sony Corporation
- Key device18 Sep 2025US 2025/0291428 A1Chicony Electronics Co., Ltd.
- Keyboard comprising multiple stabilized tile-shaped keys29 Dec 2016US 2016/0379772 A1fm marketing gmbh
- Keyswitch structure10 Nov 2016US 2016/0329166 A1Darfon Electronics Corp.
- Input device6 Oct 2016US 2016/0293361 A1Alps Electric Co., Ltd.
- Push switch30 Jul 2015US 2015/0213972 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- Flat input keyboard for data processing machines or the like and process for producing the same132US 5,748,114 A1998
- Keyboard switch assembly with improved pushbutton and associated double snap acting actuator/contactor structure85US 3,978,297 AChomerics, Inc. · 1976
- Backlit tactile keyboard with improved tactile and electrical characteristics73US 5,138,119 ALucas Duralith Corporation · 1992
- Portable calculator58US 4,002,892 A1977
- Backlit tactile keyboard with improved tactile and electrical characteristics56US 5,149,923 ALucas Duralith Corporation · 1992