H05B 41/24
In which the lamp is fed by high frequency ac , or
Official title: in which the lamp is fed by high frequency AC {, or with separate oscillator frequency} (H05B41/26 takes precedence)
H05B41/24 (In which the lamp is fed by high frequency ac , or) appears on 467 US grants and 252 published applications in this corpus.
Search patents in H05B- Granted patents
- 467
- Published applications
- 252
- Assignees
- 188
- Inventors
- 660
- Latest grant
- 27 Feb 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 16 | 0 |
| 1992 | 13 | 0 |
| 1993 | 13 | 0 |
| 1994 | 19 | 0 |
| 1995 | 23 | 0 |
| 1996 | 22 | 0 |
| 1997 | 11 | 0 |
| 1998 | 19 | 0 |
| 1999 | 19 | 0 |
| 2000 | 18 | 0 |
| 2001 | 27 | 1 |
| 2002 | 19 | 16 |
| 2003 | 17 | 18 |
| 2004 | 15 | 15 |
| 2005 | 14 | 36 |
| 2006 | 20 | 15 |
| 2007 | 17 | 29 |
| 2008 | 15 | 15 |
| 2009 | 19 | 19 |
| 2010 | 12 | 14 |
| 2011 | 10 | 4 |
| 2012 | 11 | 10 |
| 2013 | 7 | 7 |
| 2014 | 10 | 12 |
| 2015 | 10 | 14 |
| 2016 | 11 | 7 |
| 2017 | 7 | 9 |
| 2018 | 15 | 2 |
| 2019 | 3 | 2 |
| 2020 | 1 | 4 |
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Image forming apparatus that fixes toner image to recording medium using first and second heaters supplied with current during overlapping time periods27 Feb 2024US 11,914,315 B2Canon Kabushiki Kaisha
- Treatment method and system for epidemic keratoconjunctivitis14 Mar 2023US 11,602,561 B2CSP Advanced Solutions Inc.
- Excimer lamp light source device8 Mar 2022US 11,270,879 B2Ushio Denki Kabushiki Kaisha
- Dedicated bias supply for radio communications in light drivers23 Nov 2021US 11,184,961 B2Erp Power, LLC
- Microwave excited ultraviolet lamp system with data logging and retrieval circuit and method18 May 2021US 11,011,368 B2Nordson Corporation
- Inductor and manufacturing method thereof, filter and electronic device19 Sep 2024US 2024/0312693 A1Beijing Boe Optoelectronics Technology Co., Ltd.
- Image forming apparatus that fixes toner image to recording medium using heater26 Jan 2023US 2023/0025489 A1Canon Kabushiki Kaisha
- Excimer lamp light source device7 Oct 2021US 2021/0313165 A1Ushio Denki Kabushiki Kaisha
- Dedicated bias supply for radio communications in light drivers31 Dec 2020US 2020/0413499 A1Erp Power, LLC
- Electronic Ballast with Single Stage Circuit Structure22 Oct 2020US 2020/0337126 A1Shenzhen Number Energy Saving Corporation
Most cited
By later US patents
- Multiple-light discharge lamp lighting device523US 7,579,785 B2Minebea Co., Ltd. · 2009
- Inductively coupled ballast circuit436US 6,825,620 B2Access Business Group International LLC · 2004
- Inductively powered lamp assembly370US 6,731,071 B2Access Business Group International LLC · 2004
- Inductively coupled ballast circuit355US 7,385,357 B2Access Business Group International LLC · 2008
- Plasma lamp with stable feedback amplification and method therefor352US 7,638,951 B2Luxim Corporation · 2009