H05B 41/288
With semiconductor devices and specially adapted for lamps without preheating electrodes
Official title: with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps {(H05B41/2806 takes precedence)}
H05B41/288 (With semiconductor devices and specially adapted for lamps without preheating electrodes) appears on 1,313 US grants and 1,024 published applications in this corpus.
Search patents in H05B- Granted patents
- 1,313
- Published applications
- 1,024
- Assignees
- 367
- Inventors
- 1,543
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 9 | 0 |
| 1990 | 15 | 0 |
| 1991 | 20 | 0 |
| 1992 | 18 | 0 |
| 1993 | 16 | 0 |
| 1994 | 20 | 0 |
| 1995 | 26 | 0 |
| 1996 | 36 | 0 |
| 1997 | 21 | 0 |
| 1998 | 26 | 0 |
| 1999 | 41 | 0 |
| 2000 | 46 | 0 |
| 2001 | 50 | 8 |
| 2002 | 58 | 61 |
| 2003 | 69 | 67 |
| 2004 | 55 | 52 |
| 2005 | 51 | 82 |
| 2006 | 63 | 99 |
| 2007 | 58 | 78 |
| 2008 | 62 | 91 |
| 2009 | 56 | 93 |
| 2010 | 44 | 114 |
| 2011 | 69 | 73 |
| 2012 | 99 | 46 |
| 2013 | 61 | 44 |
| 2014 | 43 | 30 |
| 2015 | 34 | 22 |
| 2016 | 26 | 19 |
| 2017 | 21 | 16 |
| 2018 | 21 | 10 |
| 2019 | 10 | 8 |
| 2020 | 4 | 2 |
| 2021 | 2 | 3 |
| 2022 | 3 | 0 |
| 2023 | 0 | 5 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for operating a discharge lamp and discharge lamp9 Jun 2026US 12,650,637 B2OSRAM GmbH
- Liquid, air, and surface treatment using high intensity broad-spectrum pulsed light and method using the same27 May 2025US 12,311,067 B2Aruna Inovation LLC
- Xenon lamp power supply, purification device and refrigeration device11 Mar 2025US 12,245,622 B2Hefei Hualing Co., Ltd.
- Input detection and protection circuit26 Apr 2022US 11,317,490 B2Lumlux Corp.
- Control method and control circuit of electronic ballast of gas discharge lamp (HID)15 Mar 2022US 11,277,891 B2Shenzhen Number Energy Saving Corporation
- A device with customized integrated electronic circuit for destroying pathogens20 Jun 2024US 2024/0197936 A1
- Xenon lamp power supply, purification device and refrigeration device22 Jun 2023US 2023/0189849 A1Hefei Hualing Co., Ltd.
- Portable ipl sterilizer and ipl toilet bowl sterilizer30 Mar 2023US 2023/0100079 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Method for operating a discharge lamp and discharge lamp9 Mar 2023US 2023/0071761 A1OSRAM GmbH
- Liquid, air, and surface treatment using high intensity broad-spectrum pulsed light and method using the same2 Mar 2023US 2023/0061524 A1Aruna Inovation LLC
Most cited
By later US patents
- Three-stage electronic ballast for metal halide lamps180US 6,856,102 B1Hitech Electronics Co., Ltd. · 2005
- High efficiency electronic ballast for high intensity discharge lamps121US 5,677,602 A1997
- Lamp brightness control circuit with ambient light compensation118US 5,581,158 AEtta Industries, Inc. · 1996
- Discharge lamp driving106US 5,932,976 AMatsushita Electric Works R&D Laboratory, Inc. · 1999
- High voltage, low power transformer for efficiently firing a gas discharge luminous display103US 4,472,661 A1984