H01H 2219/064
Optical isolation of switch sites
H01H2219/064 (Optical isolation of switch sites) appears on 195 US grants and 221 published applications in this corpus.
Search patents in H01H- Granted patents
- 195
- Published applications
- 221
- Assignees
- 135
- Inventors
- 427
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 3 |
| 2006 | 3 | 6 |
| 2007 | 1 | 9 |
| 2008 | 7 | 16 |
| 2009 | 10 | 16 |
| 2010 | 5 | 17 |
| 2011 | 13 | 7 |
| 2012 | 10 | 17 |
| 2013 | 9 | 7 |
| 2014 | 13 | 16 |
| 2015 | 12 | 10 |
| 2016 | 10 | 7 |
| 2017 | 8 | 5 |
| 2018 | 6 | 10 |
| 2019 | 7 | 8 |
| 2020 | 7 | 12 |
| 2021 | 10 | 8 |
| 2022 | 7 | 10 |
| 2023 | 15 | 11 |
| 2024 | 8 | 10 |
| 2025 | 7 | 3 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light-emitting keyboard and backlight module7 Apr 2026US 12,597,570 B2Lite-On Electronics (Guangzhou) Limited
- Methods, systems, and apparatus for junction box assembly10 Feb 2026US 12,548,987 B2Snap One, LLC
- Luminous keyboard and backlight module thereof13 Jan 2026US 12,525,413 B2Darfon Electronics Corp.
- Key structure21 Oct 2025US 12,451,303 B1Primax Electronics Ltd.
- Backlight module with two light guide regions and keyboard8 Jul 2025US 12,352,995 B2Lite-0N Electronics (Guangzhou) Limited
- Light-emitting keyboard9 Jul 2026US 2026/0196418 A1Lite-On Electronics (Guangzhou) Limited
- Operating device for an actuator of a motor vehicle18 Jun 2026US 2026/0167250 A1Ferrari S.P. A.
- Methods, systems, and apparatus for junction box assembly21 May 2026US 2026/0142445 A1Snap One, LLC
- Backlight module and lighting keyboard12 Mar 2026US 2026/0074128 A1Darfon Electronics Corp.
- Methods, systems, and apparatus for junction box assembly12 Mar 2026US 2026/0074493 A1Snap One, LLC
Most cited
By later US patents
- Light distribution for illuminated keyboard switches and displays119US 5,397,867 ALucas Industries Limited · 1995
- Illuminated switch assembly with combined light and light shield59US 4,683,359 AEaton Corporation · 1987
- Backlit key assembly having a reduced thickness57US 8,263,887 B2Research In Motion Limited · 2012
- Key assembly for electronic device52US 8,854,312 B2BlackBerry Limited · 2014
- Key structure with scissors-type connecting member50US 8,581,127 B2Primax Electronics Ltd. · 2013