H03F 3/3001
With field-effect transistors
Official title: {with field-effect transistors}
H03F3/3001 (With field-effect transistors) appears on 1,372 US grants and 990 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,372
- Published applications
- 990
- Assignees
- 465
- Inventors
- 2,123
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 13 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 15 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 11 | 0 |
| 1989 | 16 | 0 |
| 1990 | 12 | 0 |
| 1991 | 14 | 0 |
| 1992 | 23 | 0 |
| 1993 | 11 | 0 |
| 1994 | 21 | 0 |
| 1995 | 19 | 0 |
| 1996 | 15 | 0 |
| 1997 | 26 | 0 |
| 1998 | 28 | 0 |
| 1999 | 33 | 0 |
| 2000 | 36 | 0 |
| 2001 | 34 | 12 |
| 2002 | 45 | 27 |
| 2003 | 34 | 27 |
| 2004 | 39 | 22 |
| 2005 | 18 | 36 |
| 2006 | 28 | 39 |
| 2007 | 29 | 34 |
| 2008 | 27 | 46 |
| 2009 | 47 | 59 |
| 2010 | 71 | 47 |
| 2011 | 40 | 42 |
| 2012 | 45 | 40 |
| 2013 | 44 | 46 |
| 2014 | 58 | 38 |
| 2015 | 37 | 44 |
| 2016 | 48 | 39 |
| 2017 | 49 | 48 |
| 2018 | 49 | 41 |
| 2019 | 37 | 31 |
| 2020 | 41 | 43 |
| 2021 | 41 | 40 |
| 2022 | 34 | 46 |
| 2023 | 33 | 47 |
| 2024 | 29 | 45 |
| 2025 | 35 | 28 |
| 2026 | 17 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 3/3022Cmos common source output sepp amplifiers858
- H03F 3/301Cmos common drain output sepp amplifiers139
- H03F 3/3061Bridge type, i.e. two complementary controlled sepp output stages93
- H03F 3/3008Bifet sepp output stages48
- H03F 3/3033Nmos sepp output stages45
- H03F 3/3044Junction fet sepp output stages45
- H03F 3/3055Parallelled mixed sepp stages17
- H03F 3/3038Pmos sepp output stages14
Recent patents
- Fully integrated CMOS multiple MOSFET-stacked double push-pull RF power amplifier29 Sep 2026US 12,750,012 B2Shanghai WUQI Microelectronics Co., Ltd.
- Amplifier circuit for microphone, microphone circuit and electronic device1 Sep 2026US 12,726,164 B2AAC Technologies PTE.Ltd.
- Control circuit and voltage output circuit25 Aug 2026US 12,719,427 B2Fuji Electric Co., Ltd.
- Low second harmonic single ended class AB amplifier4 Aug 2026US 12,700,840 B2Texas Instruments Incorporated
- Systems and methods for low voltage and low power transimpedance amplifier (TIA) design12 May 2026US 12,627,263 B1Cisco Technology, Inc.
- Differential amplifier and data driving device6 Aug 2026US 2026/0230050 A1Lx Semicon Co., Ltd.
- Low-noise amplifier30 Jul 2026US 2026/0221945 A1
- Systems and methods for analog front-end (afe) amplification with a complementary bias-stage circuit30 Jul 2026US 2026/0221951 A1Samsung Electronics Co., Ltd.
- System and methods for efficient common mode suppression for transmission systems16 Jul 2026US 2026/0205068 A1Avago Technologies International Sales Pte. Limited
- Operational amplifier with enhanced input slew rate16 Jul 2026US 2026/0205078 A1Novatek Microelectronics Corp.
Most cited
By later US patents
- CMOS Operational amplifier225US 4,554,515 AAT&T Laboratories · 1985
- Circuits for linear conversion between currents and voltages116US 5,165,054 ASynaptics Incorporated · 1992
- Circuits for linear conversion between voltages and currents114US 5,126,685 ASynaptics Incorporated · 1992
- Linear, continuous-time, two quadrant multiplier112US 5,107,149 ASynaptics Incorporated · 1992
- Push pull buffer with noise cancelling symmetry105US 5,513,389 AMotorola, Inc. · 1996