H01H 2219/052
Phosphorescence
H01H2219/052 (Phosphorescence) appears on 64 US grants and 61 published applications in this corpus.
Search patents in H01H- Granted patents
- 64
- Published applications
- 61
- Assignees
- 56
- Inventors
- 138
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 3 | 5 |
| 2004 | 1 | 3 |
| 2005 | 2 | 4 |
| 2006 | 5 | 2 |
| 2007 | 6 | 10 |
| 2008 | 3 | 4 |
| 2009 | 4 | 5 |
| 2010 | 3 | 1 |
| 2011 | 3 | 2 |
| 2012 | 2 | 4 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 5 |
| 2017 | 0 | 3 |
| 2018 | 4 | 1 |
| 2019 | 3 | 6 |
| 2020 | 5 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Photoluminescence keyboard glyph lighting16 Sep 2025US 12,416,399 B2Apple Inc.
- Backlight module21 Jun 2022US 11,366,263 B1Chicony Power Technology Co., Ltd.
- Luminous keyboard29 Jun 2021US 11,048,336 B2Primax Electronics Ltd.
- Light-emitting assembly for keyboard29 Dec 2020US 10,879,019 B2Apple Inc.
- Apparatus and method of backlighting through a cover on the apparatus27 Oct 2020US 10,818,449 B2Rohinni, LLC
- Photoluminescence keyboard glyph lighting4 Jan 2024US 2024/0003528 A1Apple Inc.
- Keycap with photoluminescent material24 Feb 2022US 2022/0059302 A1Intel Corporation
- Apparatus and method of backlighting through a cover on the apparatus16 Jul 2020US 2020/0227217 A1Rohinni, LLC
- Product and package including power producer and output mechanism, and related method28 Nov 2019US 2019/0362658 A1R. J. Reynolds Tobacco Company
- Luminous membrane keyboard25 Jul 2019US 2019/0228932 A1Suzhou Luumii Ltd.
Most cited
By later US patents
- Computer and method providing for illumination of keyboard219US 6,911,971 B2International Business Machines Corporation · 2005
- Transmissive optical elements including transparent plastic shell having a phosphor dispersed therein, and methods of fabricating same155US 7,029,935 B2Cree, Inc. · 2006
- Cordless computer keyboard with illuminated keys70US 7,129,930 B1Micron Technology, Inc. · 2006
- Indicator device and illumination device65US 6,517,213 B1Idec Izumi Corporation · 2003
- Armrest electrical switch arrangement with soft interior trim panel60US 5,448,028 ADavidson Textron Inc. · 1995