F21V 3/049
Patterns or structured surfaces for diffusing light
Official title: {Patterns or structured surfaces for diffusing light, e.g. frosted surfaces}
F21V3/049 (Patterns or structured surfaces for diffusing light) appears on 536 US grants and 630 published applications in this corpus.
Search patents in F21V- Granted patents
- 536
- Published applications
- 630
- Assignees
- 325
- Inventors
- 1,205
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 3 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 3 | 3 |
| 2011 | 5 | 11 |
| 2012 | 6 | 30 |
| 2013 | 11 | 39 |
| 2014 | 32 | 56 |
| 2015 | 27 | 52 |
| 2016 | 33 | 52 |
| 2017 | 38 | 43 |
| 2018 | 44 | 46 |
| 2019 | 56 | 38 |
| 2020 | 45 | 43 |
| 2021 | 51 | 32 |
| 2022 | 33 | 45 |
| 2023 | 43 | 26 |
| 2024 | 50 | 32 |
| 2025 | 28 | 41 |
| 2026 | 21 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Progressive frost in a luminaire8 Sep 2026US 12,729,831 B2Robe Lighting s.r.o.
- Integrated tilt-oriented led light source module8 Sep 2026US 12,729,837 B1Huizhou Hanxing Optoelectronics Technology Co., Ltd.
- Shadow-free illumination lamp8 Sep 2026US 12,729,839 B1Prospection Solutions, LLC
- Modular LED lighting devices and systems with oblique edge diffusion panel18 Aug 2026US 12,710,146 B2
- Lighting apparatus11 Aug 2026US 12,704,244 B2Signify Holding B. V.
- An Aerosol Generating Device and a Method for Making a Light Diffuser for an Aerosol Generating Device8 Oct 2026US 2026/0305724 A1JT International SA
- Tunable laser phosphor engine with rotating optical wedge8 Oct 2026US 2026/0309311 A1Signify Holding B. V.
- Modular stackable light diffusers24 Sep 2026US 2026/0287142 A13form, Inc.
- Optical inspection system for automated detection of biological contaminants and surface defects in fish fillets combined with shadow-free illumination lamp24 Sep 2026US 2026/0287155 A1Prospection Solutions, LLC
- Makeup mirror lamp capable of air blowing and fill-light illumination17 Sep 2026US 2026/0276190 A1Dongguan Mizhi Intelligent Technology Co., Ltd.
Most cited
By later US patents
- Lighting units429US 5,890,794 A1999
- Apparatus with light emitting or absorbing diodes167US 9,018,833 B2Nthdegree Technologies Worldwide Inc. · 2015
- Light distribution using a light emitting diode assembly158US 7,712,918 B2Altair Engineering, Inc. · 2010
- Light distribution using a light emitting diode assembly148US 7,926,975 B2Altair Engineering, Inc. · 2011
- Light bulb with omnidirectional output124US 8,750,671 B1Fusion Optix, Inc. · 2014