H03F 3/45847
Measuring at the input circuit of the differential amplifier
Official title: {Measuring at the input circuit of the differential amplifier}
H03F3/45847 (Measuring at the input circuit of the differential amplifier) appears on 4 US grants and 3 published applications in this corpus.
Search patents in H03F- Granted patents
- 4
- Published applications
- 3
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 16 Sep 2014
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- H03F 3/45852Controlling the input circuit of the differential amplifier3
- H03F 3/4586Controlling the active amplifying circuit of the differential amplifier1
- H03F 3/45856Controlling the common source circuit of the differential amplifier0
- H03F 3/45865Controlling the loading circuit of the differential amplifier0
Recent patents
- Instrumentation input systems16 Sep 2014US 8,836,425 B2Analog Devices, Inc.
- Instrumentation input systems28 May 2013US 8,451,052 B2Analog Devices, Inc.
- Instrumentation input systems17 Jan 2012US 8,098,094 B2Analog Devices, Inc.
- Common-base, source-driven differential amplifier13 Feb 1990US 4,901,031 ABurr-Brown Corporation
Most cited
By later US patents
- Common-base, source-driven differential amplifier13US 4,901,031 ABurr-Brown Corporation · 1990
- Instrumentation input systems5US 8,098,094 B2Analog Devices, Inc. · 2012
- Instrumentation input systems2US 8,451,052 B2Analog Devices, Inc. · 2013
- Instrumentation input systems1US 8,836,425 B2Analog Devices, Inc. · 2014