H03C 1/545
Using bipolar transistors
Official title: {using bipolar transistors}
H03C1/545 (Using bipolar transistors) appears on 31 US grants and 2 published applications in this corpus.
Search patents in H03C- Granted patents
- 31
- Published applications
- 2
- Assignees
- 24
- Inventors
- 48
- Latest grant
- 6 Sep 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multiplier arrangement, signal modulator and transmitter6 Sep 2005US 6,940,920 B2Alcatel
- Transmitter and method of generating a transmission signal30 Nov 2004US 6,826,389 B2Koninklijke Philips Electronics N. V.
- Modulator structure for a transmitter and a mobile station16 Apr 2002US 6,373,345 B1Nokia Mobile Phones Ltd.
- Low-voltage, current-folded signal modulators and methods9 Oct 2001US 6,300,845 B1Linear Technology Corporation
- Double-balanced modulator and quadri-phase shift keying device5 Sep 2000US 6,114,921 AAlps Electric Co., Ltd.
Most cited
By later US patents
- Interface between SAW filter and Gilbert cell mixer132US 5,515,014 AAT&T Corp. · 1996
- I/Q quadraphase modulator circuit126US 5,574,755 APhilips Electronics North America Corporation · 1996
- Binary phase shift keying modulation system98US 5,119,396 AAxonn Corporation · 1992
- Binary phase shift keying modulation system and/or frequency multiplier89US 5,265,120 AAxonn Corporation · 1993
- Low noise Gilbert Multiplier Cells and quadrature modulators54US 5,847,623 AEricsson Inc. · 1998