H03F 3/3432
With bipolar transistors
Official title: {with bipolar transistors}
H03F3/3432 (With bipolar transistors) appears on 172 US grants and 124 published applications in this corpus.
Search patents in H03F- Granted patents
- 172
- Published applications
- 124
- Assignees
- 100
- Inventors
- 289
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 14 | 10 |
| 2003 | 7 | 5 |
| 2004 | 10 | 11 |
| 2005 | 7 | 14 |
| 2006 | 13 | 14 |
| 2007 | 12 | 9 |
| 2008 | 7 | 2 |
| 2009 | 4 | 3 |
| 2010 | 10 | 5 |
| 2011 | 2 | 2 |
| 2012 | 2 | 9 |
| 2013 | 4 | 2 |
| 2014 | 6 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 5 | 3 |
| 2018 | 2 | 5 |
| 2019 | 5 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 6 |
| 2022 | 5 | 4 |
| 2023 | 2 | 3 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Voltage-to-current converter with complementary current mirrors23 Dec 2025US 12,506,454 B2Analog Devices International Unlimited Company
- Shadow resistance-to-frequency and resistance-to-time converter21 Oct 2025US 12,451,850 B1King Fahd University of Petroleum and Minerals
- Power amplifier circuit and differential power amplifier circuit8 Jul 2025US 12,355,405 B2Murata Manufacturing Co., Ltd.
- Darlington pair bipolar junction transistor sensor26 Nov 2024US 12,154,899 B2International Business Machines Corporation
- Constant current generation circuit for optocoupler isolation amplifier and current precision adjustment method19 Mar 2024US 11,934,216 B2Hefei Aichuangwei Electronic Technology Co., Ltd.
- Transimpedance amplifier adaptive to input current variation and output voltage level shift16 Apr 2026US 2026/0106585 A1Raytheon Company
- Common-mode stabilization of high-frequency differential distributed driver amplifier26 Mar 2026US 2026/0088784 A1Ciena Corporation
- Amplifier circuit for broadband and low-noise amplification of a capacitive current source and a sensor system19 Mar 2026US 2026/0081564 A1
- Methods and apparatus to improve an output of an amplifier27 Mar 2025US 2025/0105800 A1Texas Instruments Incorporated
- Logarithmic current to voltage converters with emitter resistance compensation25 Jul 2024US 2024/0250647 A1Analog Devices, Inc.
Most cited
By later US patents
- Bias enhancement circuit for linear amplifiers58US 6,472,937 B1Conexant Systems, Inc. · 2002
- Low voltage current mirror and CTAT current source and method46US 5,982,201 AAnalog Devices, Inc. · 1999
- Power amplifier module with stable idling current30US 6,731,171 B2Hitachi, Ltd. · 2004
- On-chip temperature compensation circuit for an electronic device24US 7,142,058 B2Freescale Semiconductor, Inc. · 2006
- Video transmission system22US 6,150,997 ACybex Computer Products Corporation · 2000