H03F 3/3074
Using parallel power transistors
Official title: {using parallel power transistors}
H03F3/3074 (Using parallel power transistors) appears on 6 US grants and 3 published applications in this corpus.
Search patents in H03F- Granted patents
- 6
- Published applications
- 3
- Assignees
- 4
- Inventors
- 9
- Latest grant
- 22 Jul 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for double sampling loop negative feedback and double sampling negative feedback amplifier22 Jul 2008US 7,403,068 B2
- Audio amplifier controller having soft start circuit protection and associated methods10 Sep 2002US 6,448,857 B1Niles Audio Corporation
- Audio amplifier with transformerless power supply20 Aug 2002US 6,437,648 B1
- Amplifier with extended output drive capability13 May 1986US 4,588,961 AAT&T Bell Laboratories
- Operational amplifier with improved output capability12 Jun 1984US 4,454,479 ABell Telephone Laboratories, Incorporated
Most cited
By later US patents
- Active bias circuit for operating push-pull amplifiers in class A mode40US 3,995,228 AThreshold Corporation · 1976
- Operational amplifier with improved output capability12US 4,454,479 ABell Telephone Laboratories, Incorporated · 1984
- Audio amplifier with transformerless power supply6US 6,437,648 B12002
- Amplifier with extended output drive capability3US 4,588,961 AAT&T Bell Laboratories · 1986
- Audio amplifier controller having soft start circuit protection and associated methods2US 6,448,857 B1Niles Audio Corporation · 2002