H01H 2219/018
Electroluminescent panel
H01H2219/018 (Electroluminescent panel) appears on 211 US grants and 172 published applications in this corpus.
Search patents in H01H- Granted patents
- 211
- Published applications
- 172
- Assignees
- 151
- Inventors
- 367
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 11 | 12 |
| 2002 | 11 | 11 |
| 2003 | 11 | 13 |
| 2004 | 18 | 11 |
| 2005 | 11 | 19 |
| 2006 | 10 | 19 |
| 2007 | 20 | 18 |
| 2008 | 4 | 16 |
| 2009 | 8 | 16 |
| 2010 | 7 | 6 |
| 2011 | 10 | 6 |
| 2012 | 7 | 3 |
| 2013 | 8 | 3 |
| 2014 | 4 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 3 |
| 2019 | 4 | 3 |
| 2020 | 4 | 4 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 3 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Button27 Jan 2026US 12,537,148 B2Darwin Precisions Corporation
- Specialized keyboard keycaps27 May 2025US 12,315,685 B2Hewlett-Packard Development Company, L. P.
- Keyswitch and illuminated keyswitch21 May 2024US 11,990,295 B2Darfon Electronics Corp.
- Safety disconnect mechanism with integrated illumination for electronic devices12 Mar 2024US 11,928,955 B2Brilliant Home Technology, Inc.
- Backlight module30 May 2023US 11,664,177 B2Chicony Power Technology Co., Ltd.
- Button17 Oct 2024US 2024/0347289 A1Darwin Precisions Corporation
- Specialized Keyboard Keycaps11 Jul 2024US 2024/0234046 A1Hewlett-Packard Development Company, L. P.
- Pushbutton switch1 Feb 2024US 2024/0038464 A1Nkk Switches Co., Ltd.
- Keyswitch and illuminated keyswitch22 Jun 2023US 2023/0197365 A1Darfon Electronics Corp.
- Push-button switch and input device5 May 2022US 2022/0137717 A1Nkk Switches Co., Ltd.
Most cited
By later US patents
- Keyboard having illuminated keys308US 6,217,183 B12001
- Vehicle interior lighting systems using electroluminescent panels303US 6,773,129 B2Federal-Mogul World Wide, Inc. · 2004
- Illuminated keyboard281US 6,918,677 B22005
- Lighting system for a keyboard278US 6,179,432 B2Compaq Computer Corporation · 2001
- Keyboard having illuminated keys266US 6,467,924 B22002