H01H 2221/04
Magnetic
Official title: magnetic
H01H2221/04 (Magnetic) appears on 136 US grants and 135 published applications in this corpus.
Search patents in H01H- Granted patents
- 136
- Published applications
- 135
- Assignees
- 60
- Inventors
- 238
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 4 |
| 2002 | 5 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 2 |
| 2012 | 3 | 5 |
| 2013 | 1 | 4 |
| 2014 | 6 | 20 |
| 2015 | 11 | 12 |
| 2016 | 17 | 9 |
| 2017 | 5 | 9 |
| 2018 | 13 | 10 |
| 2019 | 8 | 8 |
| 2020 | 17 | 18 |
| 2021 | 8 | 3 |
| 2022 | 8 | 3 |
| 2023 | 6 | 3 |
| 2024 | 4 | 3 |
| 2025 | 3 | 4 |
| 2026 | 1 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Key structure14 Apr 2026US 12,603,236 B2Acer Incorporated
- Mechanical keyboard14 Oct 2025US 12,444,555 B2Primax Electronics Ltd.
- Hybrid analog key structure16 Sep 2025US 12,418,289 B1Logitech Europe S. A.
- Keyswitch assembly8 Apr 2025US 12,272,504 B2Darfon Electronics Corp.
- System and method for obtaining user input with passive keyboard5 Nov 2024US 12,136,528 B2Dell Products L. P.
- Pressing Feedback Apparatus and Method, and Electronic Device10 Sep 2026US 2026/0267419 A1Honor Device Co., Ltd.
- Keyboard and keyswitch structure thereof21 May 2026US 2026/0142099 A1Darfon Electronics Corp.
- Input device and operation button2 Apr 2026US 2026/0091308 A1Sony Interactive Entertainment Inc.
- Magnetic switch key26 Feb 2026US 2026/0058080 A1Shenzhen Feidao technology Co., LTD
- Magnetic Conduction Mechanism Applied to Key Switch15 Jan 2026US 2026/0018351 A1Dongguan City Kaihua Electronics Co., Ltd
Most cited
By later US patents
- Keyboard99US 8,232,494 B22012
- Switching device of thin type and display device with switch82US 5,977,888 AIdec Izumi Corporation · 1999
- Keyswitch using magnetic force69US 8,629,362 B1Synerdyne Corporation · 2014
- Apparatus for selectively varying keyboard switching force61US 5,220,318 AAmpex Corporation · 1993
- Overlay electrical conductor for a magnetically coupled pushbutton switch46US 6,466,118 B1Duraswitch Industries, Inc. · 2002