H01H 2227/016
Switch site protrusions
Official title: Switch site protrusions; Force concentrators
H01H2227/016 (Switch site protrusions) appears on 23 US grants and 29 published applications in this corpus.
Search patents in H01H- Granted patents
- 23
- Published applications
- 29
- Assignees
- 30
- Inventors
- 57
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 3 | 4 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 3 |
| 2013 | 4 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 4 |
| 2020 | 0 | 1 |
| 2021 | 4 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Key device8 Jul 2025US 12,354,814 B2Maintek Computer (Suzhou) Co., Ltd.
- Electronic switch mechanism7 Dec 2021US 11,195,676 B2Gyrus ACMI, Inc.
- Mouse device19 Oct 2021US 11,152,169 B1Primax Electronics Ltd.
- Spring and switch21 Sep 2021US 11,127,544 B2Citizen Electronics Co., Ltd.
- Key structure2 Feb 2021US 10,910,175 B2Lite-On Electronics (Guangzhou) Limited
- Key device24 Aug 2023US 2023/0268142 A1Maintek Computer (Suzhou) Co., Ltd.
- Spring and switch15 Jul 2021US 2021/0217564 A1Citizen Watch Co., Ltd.
- Push switch29 Apr 2021US 2021/0125800 A1Mitsumi Electric Co., Ltd.
- Key structure27 Feb 2020US 2020/0066466 A1Lite-On Electronics (Guangzhou) Limited
- Soft-rubber keyboard having hard sheets with convex switches25 Jul 2019US 2019/0228929 A1
Most cited
By later US patents
- Tactile feel membrane switch assembly74US 4,463,234 ACentralab, Inc. · 1984
- Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors23US 3,988,551 AMagic Dot, Inc. · 1976
- Device and technique for assigning different inputs to keys on a keypad23US 7,511,700 B2Palm, Inc. · 2009
- Light emitting sheet module21US 7,690,803 B2Citizen Electronics Co., Ltd. · 2010
- Small form-factor keypad for mobile computing devices16US 7,525,534 B2Palm, Inc. · 2009