Threshold Corporation
Santa Rosa, CA, US· latest recorded location
Threshold Corporation is named on 4 US grants and 1 published applications in this corpus. Its most frequent classification is H03F (Amplifiers).
- Granted patents
- 4
- Published applications
- 1
- Inventors
- 4
- Granted in 2026 so far
- 0
- Most recent grant
- 6 Feb 1990
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
By publication year.
Technology areas
Share of 5 documents
Recent patents
- Active low frequency acoustic resonance suppressor6 Feb 1990US 4,899,387 A
- Opto-isolated bias circuit for operating push-pull amplifiers in class A and class AB modes21 Jun 1988US 4,752,745 A
- Constant voltage - constant current high fidelity amplifier15 Aug 1978US 4,107,619 A
- Active bias circuit for operating push-pull amplifiers in class A mode30 Nov 1976US 3,995,228 A
Most cited
By later US patents
- Active bias circuit for operating push-pull amplifiers in class A mode40US 3,995,228 A1976
- Opto-isolated bias circuit for operating push-pull amplifiers in class A and class AB modes16US 4,752,745 A1988
- Constant voltage - constant current high fidelity amplifier10US 4,107,619 A1978
- Active low frequency acoustic resonance suppressor10US 4,899,387 A1990