H05B 33/12
Light sources with substantially two-dimensional [2d] radiating surfaces
Official title: Light sources with substantially two-dimensional [2D] radiating surfaces
H05B33/12 (Light sources with substantially two-dimensional [2d] radiating surfaces) appears on 6,467 US grants and 7,858 published applications in this corpus.
Search patents in H05B- Granted patents
- 6,467
- Published applications
- 7,858
- Assignees
- 1,305
- Inventors
- 9,450
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 14 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 10 | 0 |
| 1984 | 13 | 0 |
| 1985 | 13 | 0 |
| 1986 | 12 | 0 |
| 1987 | 26 | 0 |
| 1988 | 42 | 0 |
| 1989 | 36 | 0 |
| 1990 | 27 | 0 |
| 1991 | 45 | 0 |
| 1992 | 48 | 0 |
| 1993 | 34 | 0 |
| 1994 | 55 | 0 |
| 1995 | 56 | 0 |
| 1996 | 77 | 0 |
| 1997 | 77 | 0 |
| 1998 | 106 | 0 |
| 1999 | 97 | 0 |
| 2000 | 71 | 0 |
| 2001 | 75 | 33 |
| 2002 | 76 | 118 |
| 2003 | 88 | 125 |
| 2004 | 123 | 309 |
| 2005 | 108 | 355 |
| 2006 | 153 | 403 |
| 2007 | 153 | 468 |
| 2008 | 161 | 383 |
| 2009 | 193 | 424 |
| 2010 | 302 | 432 |
| 2011 | 312 | 387 |
| 2012 | 286 | 410 |
| 2013 | 329 | 446 |
| 2014 | 379 | 355 |
| 2015 | 390 | 290 |
| 2016 | 303 | 252 |
| 2017 | 294 | 262 |
| 2018 | 257 | 239 |
| 2019 | 235 | 293 |
| 2020 | 231 | 263 |
| 2021 | 193 | 246 |
| 2022 | 179 | 283 |
| 2023 | 182 | 308 |
| 2024 | 219 | 450 |
| 2025 | 217 | 218 |
| 2026 | 131 | 106 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H05B 33/14Characterised by the chemical or physical composition or the arrangement of the4,235
- H05B 33/22Characterised by the chemical or physical composition or the arrangement of auxiliary1,241
- H05B 33/26Characterised by the composition or arrangement of the conductive material used as891
- H05B 33/20Characterised by the chemical or physical composition or the arrangement of the490
- H05B 33/18Characterised by the nature or concentration of the activator62
Recent patents
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- Light-emitting apparatus, electronic equipment, display apparatus, and lighting device25 Aug 2026US 12,720,951 B2Semiconductor Energy Laboratory Co.Ltd.
- Organic-light emitting diode1 Oct 2026US 2026/0298429 A1Pictiva Displays International Limited
- Organic electroluminescent materials and devices24 Sep 2026US 2026/0293513 A1UDC Ireland Limited
- Light-emitting pixels, fabrics, and related components, products, and methods3 Sep 2026US 2026/0262146 A1Purdue Research Foundation
- Solution processable rhenium chalcohalides for optoelectronic light emitting diodes27 Aug 2026US 2026/0255737 A1Northwestern University
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Most cited
By later US patents
- Electroluminescent devices2,432US 5,247,190 ACambridge Capital Management Limited · 1993
- Electroluminescent device with modified thin film luminescent zone2,310US 4,769,292 AEastman Kodak Company · 1988
- OLEDs doped with phosphorescent compounds1,989US 6,303,238 B1The Trustees of Princeton University · 2001
- Vacuum deposited, non-polymeric flexible organic light emitting devices1,740US 5,844,363 AThe Trustees of Princeton Univ. · 1998
- Multicolor display devices1,567US 6,013,982 AThe Trustees of Princeton University · 2000