H01H 2203/052
For backlighted keyboards
Official title: for backlighted keyboards
H01H2203/052 (For backlighted keyboards) appears on 28 US grants and 27 published applications in this corpus.
Search patents in H01H- Granted patents
- 28
- Published applications
- 27
- Assignees
- 27
- Inventors
- 55
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 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 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 6 |
| 2021 | 2 | 1 |
| 2022 | 4 | 1 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Illuminated keyswitch9 Jun 2026US 12,650,550 B2Darfon Electronics Corp.
- Illuminated keyswitch structure22 Apr 2025US 12,283,439 B2Darfon Electronics Corp.
- Keyboard backlight module and applications thereof14 Nov 2023US 11,815,708 B2Lite-On Electronics (Guangzhou) Limited
- Keyboard backlight module and applications thereof27 Dec 2022US 11,538,641 B2Lite-On Electronics (Guangzhou) Limited
- Backlight module21 Jun 2022US 11,366,263 B1Chicony Power Technology Co., Ltd.
- Surface-mounted backlit switch30 Apr 2026US 2026/0120976 A1C&K Components S.A.S.
- Illuminated keyswitch29 May 2025US 2025/0172738 A1Darfon Electronics Corp.
- Illuminated keyswitch structure28 Dec 2023US 2023/0420197 A1Darfon Electronics Corp.
- Keyboard backlight module and applications thereof4 May 2023US 2023/0138295 A1Lite-On Electronics (Guangzhou) Limited
- Keyboard backlight module and applications thereof3 Mar 2022US 2022/0068572 A1Lite-On Electronics (Guangzhou) Limited
Most cited
By later US patents
- Apparatus for selective backlighting of keys of a keyboard78US 4,772,769 ABurr-Brown Corporation · 1988
- Backlit tactile keyboard with improved tactile and electrical characteristics73US 5,138,119 ALucas Duralith Corporation · 1992
- Backlit full travel key assembly64US 6,743,993 B1Advanced Input Devices, Inc. · 2004
- Backlit tactile keyboard with improved tactile and electrical characteristics56US 5,149,923 ALucas Duralith Corporation · 1992
- Illuminated switch41US 4,811,175 A1989