H03C 3/222
Using bipolar transistors
Official title: {using bipolar transistors (H03C3/227 takes precedence)}
H03C3/222 (Using bipolar transistors) appears on 31 US grants and 4 published applications in this corpus.
Search patents in H03C- Granted patents
- 31
- Published applications
- 4
- Assignees
- 19
- Inventors
- 45
- Latest grant
- 11 Jan 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Circuit arrangement for frequency modulation11 Jan 2011US 7,868,712 B2Atmel Automotive GmbH
- Modulation signal generation circuit, transmission/reception module, and radar device7 Dec 2010US 7,847,644 B2Mitsubishi Electric Corporation
- Ultra wide band, differential input/output, high frequency active mixer in an integrated circuit8 Sep 2009US 7,587,187 B2ITT Manufacturing Enterprises, Inc.
- Direct digital polar modulator21 Dec 2004US 6,834,084 B2
- Method and apparatus for modulation of a voltage controlled oscillator5 Mar 2002US 6,353,370 B1Micro Linear Corporation
- Modulation signal generation circuit, transmission/reception module, and radar device10 Sep 2009US 2009/0224845 A1Mitsubishi Electric Corporation
- Circuit arrangement for frequency modulation4 Sep 2008US 2008/0211595 A1Atmel Automotive GmbH
- Ultra wide band, differential input/output, high frequency active mixer in an integrated circuit3 Jan 2008US 2008/0003972 A1ITT Manufacturing Enterprises, Inc.
- Direct digital polar modulator6 Nov 2003US 2003/0206056 A1
Most cited
By later US patents
- Voltage controlled oscillator with frequency sensitivity control84US 4,736,169 AHughes Aircraft Company · 1988
- Direct digital polar modulator54US 6,834,084 B22004
- Frequency modulator35US 5,075,643 AMotorola, Inc. · 1991
- Remote infrared transceiver and method of using same27US 5,027,433 AH. M. Electronics, Inc. · 1991
- Varactor controlled push-pull oscillator22US 4,360,790 ASiemens Aktiengesellschaft · 1982