H05B 41/00
Circuit arrangements or apparatus for igniting or operating discharge lamps
Official title: Circuit arrangements or apparatus for igniting or operating discharge lamps (structurally associated with the discharge lamps H01J61/54, H01J61/56)
H05B41/00 (Circuit arrangements or apparatus for igniting or operating discharge lamps) appears on 8,085 US grants and 5,053 published applications in this corpus.
Search patents in H05B- Granted patents
- 8,085
- Published applications
- 5,053
- Assignees
- 1,967
- Inventors
- 8,562
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 71 | 0 |
| 1977 | 82 | 0 |
| 1978 | 85 | 0 |
| 1979 | 59 | 0 |
| 1980 | 76 | 0 |
| 1981 | 78 | 0 |
| 1982 | 87 | 0 |
| 1983 | 93 | 0 |
| 1984 | 109 | 0 |
| 1985 | 91 | 0 |
| 1986 | 85 | 0 |
| 1987 | 105 | 0 |
| 1988 | 80 | 0 |
| 1989 | 86 | 0 |
| 1990 | 157 | 0 |
| 1991 | 205 | 0 |
| 1992 | 166 | 0 |
| 1993 | 123 | 0 |
| 1994 | 133 | 0 |
| 1995 | 188 | 0 |
| 1996 | 179 | 0 |
| 1997 | 146 | 0 |
| 1998 | 242 | 0 |
| 1999 | 271 | 0 |
| 2000 | 298 | 0 |
| 2001 | 272 | 42 |
| 2002 | 268 | 286 |
| 2003 | 290 | 276 |
| 2004 | 272 | 312 |
| 2005 | 223 | 413 |
| 2006 | 292 | 427 |
| 2007 | 333 | 427 |
| 2008 | 328 | 463 |
| 2009 | 268 | 481 |
| 2010 | 299 | 468 |
| 2011 | 343 | 280 |
| 2012 | 365 | 231 |
| 2013 | 269 | 189 |
| 2014 | 216 | 181 |
| 2015 | 169 | 123 |
| 2016 | 148 | 87 |
| 2017 | 96 | 85 |
| 2018 | 90 | 60 |
| 2019 | 74 | 56 |
| 2020 | 51 | 44 |
| 2021 | 27 | 32 |
| 2022 | 29 | 29 |
| 2023 | 28 | 28 |
| 2024 | 19 | 12 |
| 2025 | 13 | 12 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Portable IPL sterilizer and IPL toilet bowl sterilizer15 Sep 2026US 12,734,263 B2Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Heat treatment apparatus for heating substrate by light irradiation15 Sep 2026US 12,739,952 B2SCREEN Holdings Co., Ltd.
- Methods and systems of driving arrays of diodes14 Jul 2026US 12,683,357 B2Semiconductor Components Industries, LLC
- Controlling groups of electrical loads16 Jun 2026US 12,660,069 B2Lutron Technology Company LLC
- Method for operating a discharge lamp and discharge lamp9 Jun 2026US 12,650,637 B2OSRAM GmbH
- Controlling groups of electrical loads24 Sep 2026US 2026/0292961 A1Lutron Technology Company LLC
- Power supply circuit and lamp10 Sep 2026US 2026/0271145 A1Filament Lighting LLC
- Light-emitting device, flash device, imaging system, and imaging method13 Aug 2026US 2026/0235932 A1Canon Kabushiki Kaisha
- Methods and apparatus for thermal processing of materials4 Jun 2026US 2026/0151793 A1PulseForge Inc.
- Flash irradiation apparatus30 Apr 2026US 2026/0122738 A1Ushio Denki Kabushiki Kaisha
Most cited
By later US patents
- Inverter992US 8,044,604 B2Rohm Co., Ltd. · 2011
- High frequency inverter with power-line-controlled frequency modulation615US 5,404,082 ANorth American Philips Corporation · 1995
- Universal ballast control circuit611US 6,137,240 ALumion Corporation · 2000
- Method to operate an incoherently emitting radiation source having at least one dielectrically impeded electrode583US 5,604,410 APatent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · 1997
- Electronic ballast system528US 4,414,492 AIntent Patent A.G. · 1983