H01H 2009/0278
Casings containing special noise reduction means
Official title: {Casings containing special noise reduction means, e.g. elastic foam between inner and outer casing}
H01H2009/0278 (Casings containing special noise reduction means) appears on 29 US grants and 32 published applications in this corpus.
Search patents in H01H- Granted patents
- 29
- Published applications
- 32
- Assignees
- 31
- Inventors
- 77
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 4 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 2 | 3 |
| 2018 | 3 | 3 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 2 | 5 |
| 2022 | 4 | 3 |
| 2023 | 3 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Key device18 Sep 2025US 2025/0291428 A1Chicony Electronics Co., Ltd.
- Keyswitch and keyboard thereof11 Apr 2024US 2024/0120160 A1Darfon Electronics Corp.
- Keyboard10 Nov 2022US 2022/0359134 A1Lite-On Electronics (Guangzhou) Limited
- Keyswitch18 Aug 2022US 2022/0262580 A1Darfon Electronics Corp.
Most cited
By later US patents
- Electromagnetic switching device30US 7,157,996 B2Matsushita Electric Works, Ltd. · 2007
- Noise reduction key structure12US 7,259,342 B2ASUSTeK COMPUTER INC. · 2007
- Keyswitch structure8US 9,837,220 B2Darfon Electronics Corp. · 2017
- Electromagnetic relay for low acoustic noise7US 5,949,313 AFujitsu Takamisawa Component Limited · 1999
- Reduced-noise relay7US 6,236,575 B1Tyco Electronics Logistics AG · 2001