H01H 2227/03
Hardness
H01H2227/03 (Hardness) appears on 20 US grants and 14 published applications in this corpus.
Search patents in H01H- Granted patents
- 20
- Published applications
- 14
- Assignees
- 21
- Inventors
- 51
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Rubber stem and switch apparatus29 Jul 2025US 12,374,513 B2Alps Alpine Co., Ltd.
- Keyboard device and key structure thereof9 May 2023US 11,646,167 B1Primax Electronics Ltd.
- Lifting mechanism and key structure using the same14 Mar 2023US 11,605,512 B2Darfon Electronics Corp.
- Push switch19 Apr 2022US 11,309,143 B2Alps Alpine Co., Ltd.
- Keyboard6 Aug 2019US 10,373,777 B1Chicony Electronics Co., Ltd.
- Composite Elastomeric Structure22 May 2025US 2025/0166944 A1Peratech IP Ltd
- Rubber stem and switch apparatus30 Nov 2023US 2023/0386766 A1Alps Alpine Co., Ltd.
- Compoisite rubber dome and molding method8 Jun 2023US 2023/0178309 A1Injection Precision Rubber (Suzhou) Co.,Ltd.
- Lifting mechanism and key structure using the same20 Oct 2022US 2022/0336165 A1Darfon Electronics Corp.
- Push switch18 Mar 2021US 2021/0082640 A1Alps Alpine Co., Ltd.
Most cited
By later US patents
- Electronic device enclosure239US 5,386,084 AII Morrow Inc. · 1995
- Tactile sensors for robotic gripper and the like97US 4,492,949 ABarry Wright Corporation · 1985
- Cover member for illuminated push button switch and method for manufacturing same37US 6,413,598 B1Shin-Etsu Polymer Co., Ltd. · 2002
- Glass membrane touch-controlled circuit apparatus for voltage selection36US 4,975,676 ASpectra-Symbol Corporation · 1990
- Method in a snap dome switch keyboard assembly for reducing contact bounce time30US 4,703,139 AKB Denver, Inc. · 1987