H01H 2219/044
Edge lighting of layer
H01H2219/044 (Edge lighting of layer) appears on 291 US grants and 345 published applications in this corpus.
Search patents in H01H- Granted patents
- 291
- Published applications
- 345
- Assignees
- 143
- Inventors
- 533
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 3 |
| 2004 | 2 | 11 |
| 2005 | 3 | 7 |
| 2006 | 6 | 5 |
| 2007 | 8 | 18 |
| 2008 | 12 | 26 |
| 2009 | 14 | 42 |
| 2010 | 19 | 34 |
| 2011 | 19 | 27 |
| 2012 | 30 | 23 |
| 2013 | 19 | 10 |
| 2014 | 18 | 25 |
| 2015 | 15 | 13 |
| 2016 | 9 | 10 |
| 2017 | 6 | 8 |
| 2018 | 11 | 11 |
| 2019 | 10 | 11 |
| 2020 | 7 | 11 |
| 2021 | 10 | 7 |
| 2022 | 7 | 10 |
| 2023 | 13 | 15 |
| 2024 | 15 | 7 |
| 2025 | 7 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic device and keyboard module thereof5 May 2026US 12,616,770 B2ASUSTeK COMPUTER INC.
- Backlight module and luminous keyboard using the same28 Apr 2026US 12,614,683 B2Lite-On Electronics (Guangzhou) Limited
- Light-emitting keyboard and backlight module7 Apr 2026US 12,597,570 B2Lite-On Electronics (Guangzhou) Limited
- Lighting keyboard, backlight module and lighting board24 Feb 2026US 12,562,327 B2Darfon Electronics Corp.
- Keyboard with backlit circuit board29 Jul 2025US 12,374,514 B2Darfon Electronics Corp.
- Light-emitting keyboard9 Jul 2026US 2026/0196418 A1Lite-On Electronics (Guangzhou) Limited
- Light-emitting keyboard and backlight module25 Sep 2025US 2025/0299892 A1Lite-On Electronics (Guangzhou) Limited
- Lighting keyboard and backlight module22 May 2025US 2025/0166941 A1Darfon Electronics Corp.
- Adapter with illuminated icon27 Mar 2025US 2025/0102137 A1Chicony Power Technology Co., Ltd.
- Lighting board, backlit module, backlit keyswitch and keyboard20 Mar 2025US 2025/0093569 A1Darfon Electronics Corp.
Most cited
By later US patents
- Integrated display panel assemblies176US 5,975,711 ALumitex, Inc. · 1999
- Light emitting panel assemblies for use in automotive applications and the like156US 5,895,115 ALumitex, Inc. · 1999
- Light emitting panel assemblies for use in automotive applications and the like120US 6,158,867 ALumitex, Inc. · 2000
- Switch having combined light pipe and printed circuit board110US 5,521,342 AGeneral Motors Corporation · 1996
- Optical actuators in keypads101US 8,432,363 B2Nokia Corporation · 2013