H05B 41/2822
Using specially adapted components in the load circuit
Official title: {using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations}
H05B41/2822 (Using specially adapted components in the load circuit) appears on 352 US grants and 321 published applications in this corpus.
Search patents in H05B- Granted patents
- 352
- Published applications
- 321
- Assignees
- 165
- Inventors
- 578
- Latest grant
- 27 Oct 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 23 | 0 |
| 2001 | 18 | 4 |
| 2002 | 11 | 13 |
| 2003 | 10 | 11 |
| 2004 | 15 | 28 |
| 2005 | 15 | 36 |
| 2006 | 25 | 43 |
| 2007 | 35 | 58 |
| 2008 | 33 | 46 |
| 2009 | 26 | 35 |
| 2010 | 27 | 24 |
| 2011 | 32 | 8 |
| 2012 | 21 | 5 |
| 2013 | 7 | 0 |
| 2014 | 4 | 3 |
| 2015 | 3 | 2 |
| 2016 | 3 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Drive device and drive method for a cold cathode fluorescent lamp142US 6,566,821 B2Matsushita Electric Industrial Co., Ltd. · 2003
- Control circuit for piezo transformer based fluorescent lamp power supplies96US 6,400,096 B1Texas Instruments Incorporated · 2002
- Power supply system for multiple loads and driving system for multiple lamps95US 6,420,839 B1Ambit Microsystems Corp. · 2002
- Circuit structure for driving a plurality of cold cathode fluorescent lamps84US 6,781,325 B2O2Micro International Limited · 2004
- Pulse frequency modulation drive circuit for piezoelectric transformer81US 6,016,052 ACTS Corporation · 2000