H03F 3/45775
By using cross switches
Official title: {by using cross switches}
H03F3/45775 (By using cross switches) appears on 44 US grants and 31 published applications in this corpus.
Search patents in H03F- Granted patents
- 44
- Published applications
- 31
- Assignees
- 34
- Inventors
- 77
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 3 |
| 2006 | 2 | 2 |
| 2007 | 2 | 3 |
| 2008 | 3 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 3 | 2 |
| 2018 | 4 | 4 |
| 2019 | 2 | 0 |
| 2020 | 3 | 3 |
| 2021 | 1 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and apparatus to reduce error in operational amplifiers23 Sep 2025US 12,424,981 B2Texas Instruments Incorporated
- Differential amplifier with variable neutralization5 Dec 2023US 11,837,997 B2Texas Instruments Incorporated
- Logarithmic RMS-detector with servo loop29 Nov 2022US 11,515,852 B1BeRex Corporation Co., Ltd
- Differential amplifier with variable neutralization26 Jan 2021US 10,903,804 B2Texas Instruments Incorporated
- Logarithmic RMS-detector with servo loop17 Nov 2020US 10,840,868 B1BeRex Corporation Co., Ltd
- Chopper circuit for multipath chopper amplifier and corresponding method of chopping16 Jul 2026US 2026/0205075 A1NXP B. V.
- Input stage for a signal processing circuit31 Jul 2025US 2025/0247063 A1Renesas Design (UK) Limited
- Chopper circuit for multipath chopper amplifier and corresponding method of chopping16 Nov 2023US 2023/0370031 A1NXP B. V.
- Methods and apparatus to reduce error in operational amplifiers28 Sep 2023US 2023/0308055 A1Texas Instruments Incorporated
- Differential amplifier with variable neutralization1 Apr 2021US 2021/0099139 A1Texas Instruments Incorporated
Most cited
By later US patents
- High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability183US 6,002,299 ACirrus Logic, Inc. · 1999
- Amplifier system62US 4,138,649 AEmerson Electric Co. · 1979
- Biomedical amplifier circuit55US 5,206,602 AHewlett-Packard Company · 1993
- Operational amplifier37US 6,380,801 B1Analog Devices, Inc. · 2002
- Chopper-stabilized operational transconductance amplifier31US 4,912,423 AGeneral Electric Company · 1990