G09F 13/0409
Arrangements for homogeneous illumination of the display surface
Official title: {Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency (arrangements of reflectors G09F13/14)}
G09F13/0409 (Arrangements for homogeneous illumination of the display surface) appears on 194 US grants and 140 published applications in this corpus.
Search patents in G09F- Granted patents
- 194
- Published applications
- 140
- Assignees
- 137
- Inventors
- 408
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 5 |
| 2003 | 6 | 6 |
| 2004 | 5 | 7 |
| 2005 | 7 | 13 |
| 2006 | 2 | 4 |
| 2007 | 7 | 6 |
| 2008 | 4 | 7 |
| 2009 | 8 | 4 |
| 2010 | 4 | 3 |
| 2011 | 3 | 12 |
| 2012 | 5 | 5 |
| 2013 | 5 | 12 |
| 2014 | 2 | 8 |
| 2015 | 10 | 7 |
| 2016 | 5 | 5 |
| 2017 | 6 | 5 |
| 2018 | 4 | 7 |
| 2019 | 4 | 2 |
| 2020 | 3 | 3 |
| 2021 | 1 | 5 |
| 2022 | 2 | 3 |
| 2023 | 3 | 4 |
| 2024 | 4 | 5 |
| 2025 | 4 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Powered retail signage assembly with consistent visibility in different lighting conditions23 Jun 2026US 12,664,918 B2Apple Inc.
- Cluster of lighting devices, display and method of manufacture8 Jul 2025US 12,352,423 B2Lumileds LLC
- Motor vehicle lighting module1 Jul 2025US 12,344,171 B2Bayerische Motoren Werke Aktiengesellschaft
- Retractable lighting fixture29 Apr 2025US 12,288,482 B2Signify Holding B. V.
- Molded lighting device for use on apparel and apparel article having same18 Mar 2025US 12,253,250 B2Holicap, Inc.
- Thin vehicle lamp assembly presenting illuminated homogenous element16 Jul 2026US 2026/0204185 A1
- Insect trapping light7 May 2026US 2026/0123618 A1KP Solutions, Inc.
- Motor Vehicle Lighting Module26 Dec 2024US 2024/0426445 A1Bayerische Motoren Werke Aktiengesellschaft
- Automobile display device29 Aug 2024US 2024/0288145 A1Toyota Jidosha Kabushiki Kaisha
- Molded lighting device for use on apparel and apparel article having same22 Aug 2024US 2024/0280252 A1Holicap, Inc.
Most cited
By later US patents
- Tapered multilayer luminaire devices282US 5,528,720 AMinnesota Mining and Manufacturing Company · 1996
- Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector276US 5,608,550 AMinnesota Mining and Manufacturing Company · 1997
- Light source for backlighting237US 6,007,209 ATeledyne Industries, Inc. · 1999
- Compact LCD luminaire228US 4,974,122 ARockwell International Corporation · 1990
- Surface light source device226US 5,134,549 AEnplas Corporation · 1992