H03F 2203/45138
Two or more differential amplifiers in ic-block form are combined
Official title: Two or more differential amplifiers in IC-block form are combined, e.g. measuring amplifiers
H03F2203/45138 (Two or more differential amplifiers in ic-block form are combined) appears on 758 US grants and 785 published applications in this corpus.
Search patents in H03F- Granted patents
- 758
- Published applications
- 785
- Assignees
- 412
- Inventors
- 1,424
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
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| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
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| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 5 | 5 |
| 2003 | 0 | 3 |
| 2004 | 4 | 9 |
| 2005 | 14 | 20 |
| 2006 | 17 | 21 |
| 2007 | 30 | 58 |
| 2008 | 53 | 64 |
| 2009 | 46 | 68 |
| 2010 | 57 | 46 |
| 2011 | 48 | 34 |
| 2012 | 39 | 33 |
| 2013 | 34 | 31 |
| 2014 | 27 | 23 |
| 2015 | 36 | 29 |
| 2016 | 26 | 32 |
| 2017 | 45 | 30 |
| 2018 | 33 | 36 |
| 2019 | 32 | 28 |
| 2020 | 33 | 46 |
| 2021 | 42 | 44 |
| 2022 | 36 | 33 |
| 2023 | 27 | 22 |
| 2024 | 22 | 28 |
| 2025 | 18 | 21 |
| 2026 | 13 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and apparatus to determine a bias current of an amplifier29 Sep 2026US 12,750,024 B2Texas Instruments Incorporated
- Differential amplifier with impedance terminations1 Sep 2026US 12,726,161 B2Qorvo US, Inc.
- Hybrid class-D amplifier4 Aug 2026US 12,700,835 B2Realtek Semiconductor Corp.
- Variable-gain amplifier, corresponding device and method16 Jun 2026US 12,658,862 B2STMicroelectronics S,r.l.
- Enhanced gain of operational amplifiers through low-frequency zero positioning12 May 2026US 12,627,272 B2The Royal Institution for the Advancement of Learning/Mcgill University
- Low noise low current bias amplifier topology1 Oct 2026US 2026/0303024 A1Analog Devices, Inc.
- Sense amplifier for a physiological sensor and/or other sensors20 Aug 2026US 2026/0240479 A1Inspire Medical Systems, Inc.
- Differential amplifier with rf switch function20 Aug 2026US 2026/0246435 A1Fujikura Ltd.
- Novel Chopper-Stabilized Correlated Double Sampling Multi-path Amplifier Circuit and Method Based on Miller Capacitor Reuse16 Jul 2026US 2026/0205074 A1Xiamen University
- Amplifier circuit25 Jun 2026US 2026/0180520 A1Industrial Technology Research Institute
Most cited
By later US patents
- RFIC with high power PA138US 7,853,234 B2Broadcom Corporation · 2010
- Compensation circuit for nullifying differential offset voltage and regulating common mode voltage of differential signals113US 4,833,418 AArchive Corporation · 1989
- Differential and symmetrical current source86US 7,884,593 B2Quantum Design, Inc. · 2011
- Chopper-stabilized instrumentation amplifier for impedance measurement81US 7,391,257 B1Medtronic, Inc. · 2008
- Variable gain amplifier79US 6,737,920 B2Atheros Communications, Inc. · 2004