H03F 3/45085
Long tailed pairs
Official title: {Long tailed pairs (H03F3/45112, H03F3/45139 take precedence)}
H03F3/45085 (Long tailed pairs) appears on 994 US grants and 751 published applications in this corpus.
Search patents in H03F- Granted patents
- 994
- Published applications
- 751
- Assignees
- 354
- Inventors
- 1,482
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 9 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 16 | 0 |
| 1996 | 19 | 0 |
| 1997 | 11 | 0 |
| 1998 | 22 | 0 |
| 1999 | 27 | 0 |
| 2000 | 13 | 0 |
| 2001 | 38 | 8 |
| 2002 | 29 | 54 |
| 2003 | 31 | 40 |
| 2004 | 44 | 27 |
| 2005 | 38 | 52 |
| 2006 | 49 | 47 |
| 2007 | 33 | 47 |
| 2008 | 54 | 41 |
| 2009 | 43 | 40 |
| 2010 | 48 | 30 |
| 2011 | 22 | 17 |
| 2012 | 31 | 14 |
| 2013 | 21 | 19 |
| 2014 | 24 | 17 |
| 2015 | 14 | 17 |
| 2016 | 21 | 16 |
| 2017 | 28 | 28 |
| 2018 | 27 | 21 |
| 2019 | 34 | 42 |
| 2020 | 32 | 44 |
| 2021 | 34 | 24 |
| 2022 | 31 | 14 |
| 2023 | 15 | 23 |
| 2024 | 13 | 15 |
| 2025 | 14 | 23 |
| 2026 | 16 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Data storage device with BiCMOS impedance-matched amplifier with transducer-bias6 Oct 2026US 12,755,754 B1Western Digital Technologies, Inc.
- Amplifier with temperature dependent gain and temperature compensated bandwidth29 Sep 2026US 12,750,011 B2STMicroelectronics International N. V.
- Intermodulation distortion mitigation25 Aug 2026US 12,719,425 B2Apple Inc.
- Variable gain optical modulator with open collector driver amplifier and method of operation18 Aug 2026US 12,712,508 B2MACOM Technology Solutions Holdings, Inc.
- Low-voltage high-speed programmable equalization circuit18 Aug 2026US 12,712,512 B2Xiamen Ux Ic Co., Ltd.
- Single-phase differential conversion circuit24 Sep 2026US 2026/0291440 A1NTT, Inc.
- Amplifier circuit building block24 Sep 2026US 2026/0291445 A1Harman International Industries, Incorporated
- Apparatus for long-reach, low-power active copper channels24 Sep 2026US 2026/0292969 A1
- Damping resonance element with double-sided dc feeding technique for dc to mm-wave high gain cascode single-ended/differential distributed amplifier17 Sep 2026US 2026/0280506 A1Ciena Corporation
- Analog front end with compensated open loop stage20 Aug 2026US 2026/0246430 A1STMicroelectronics International N. V.
Most cited
By later US patents
- Differential DC offset compensation circuit181US 5,471,665 AMotorola, Inc. · 1995
- Linear variable gain amplifiers137US 6,563,382 B1International Business Machines Corporation · 2003
- Matched feedback amplifier with improved linearity93US 8,604,879 B2Integrated Device Technology, Inc. · 2013
- Differential amplifier with rail-to-rail input capability and controlled transconductance84US 4,555,673 ASignetics Corporation · 1985
- Differential amplifiers which can form a residue amplifier in sub-ranging A/D converters84US 5,530,444 AAnalog Devices, Inc. · 1996