H03F 1/3211
In differential amplifiers
Official title: {in differential amplifiers}
H03F1/3211 (In differential amplifiers) appears on 858 US grants and 710 published applications in this corpus.
Search patents in H03F- Granted patents
- 858
- Published applications
- 710
- Assignees
- 343
- Inventors
- 1,484
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 10 | 0 |
| 1995 | 14 | 0 |
| 1996 | 20 | 0 |
| 1997 | 12 | 0 |
| 1998 | 11 | 0 |
| 1999 | 20 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 4 |
| 2002 | 7 | 18 |
| 2003 | 24 | 22 |
| 2004 | 21 | 18 |
| 2005 | 19 | 30 |
| 2006 | 27 | 24 |
| 2007 | 26 | 30 |
| 2008 | 26 | 43 |
| 2009 | 40 | 37 |
| 2010 | 36 | 25 |
| 2011 | 33 | 17 |
| 2012 | 17 | 16 |
| 2013 | 22 | 20 |
| 2014 | 24 | 22 |
| 2015 | 23 | 18 |
| 2016 | 23 | 25 |
| 2017 | 32 | 31 |
| 2018 | 37 | 45 |
| 2019 | 49 | 30 |
| 2020 | 32 | 42 |
| 2021 | 30 | 31 |
| 2022 | 34 | 31 |
| 2023 | 26 | 35 |
| 2024 | 18 | 28 |
| 2025 | 25 | 45 |
| 2026 | 13 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Differential amplifier with impedance terminations1 Sep 2026US 12,726,161 B2Qorvo US, Inc.
- Charge injection-related and switching error-related offset reduction by local chopping of switched-capacitor circuits1 Sep 2026US 12,726,163 B1Cirrus Logic, Inc.
- High speed amplifier circuit25 Aug 2026US 12,719,411 B2Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Intermodulation distortion mitigation25 Aug 2026US 12,719,425 B2Apple Inc.
- Field effect transistor (FET) transconductance device with varying gate lengths25 Aug 2026US 12,719,426 B2Qorvo US, Inc.
- Amplifier circuit building block24 Sep 2026US 2026/0291445 A1Harman International Industries, Incorporated
- Stacked amplifier with linearization scheme17 Sep 2026US 2026/0280495 A1Apple Inc.
- High linearity transconductance amplifier17 Sep 2026US 2026/0280496 A1Realtek Semiconductor Corp.
- Analog front end with compensated open loop stage20 Aug 2026US 2026/0246430 A1STMicroelectronics International N. V.
- Differential-to-single-ended active converter13 Aug 2026US 2026/0238207 A1QUALCOMM Incorporated
Most cited
By later US patents
- Wide dynamic range control amplifier with offset correction230US 4,354,162 ANational Semiconductor Corporation · 1982
- Subthreshold CMOS amplifier with wide input voltage range126US 5,095,284 ASynaptics Incorporated · 1992
- Gain boosting RF gain stage with cross-coupled capacitors119US 7,697,915 B2QUALCOMM Incorporated · 2010
- System and method for providing a low power receiver design114US 6,377,315 B1Broadcom Corporation · 2002
- Push pull buffer with noise cancelling symmetry105US 5,513,389 AMotorola, Inc. · 1996