H03F 3/085
Using opto-couplers between stages
Official title: {using opto-couplers between stages}
H03F3/085 (Using opto-couplers between stages) appears on 90 US grants and 73 published applications in this corpus.
Search patents in H03F- Granted patents
- 90
- Published applications
- 73
- Assignees
- 68
- Inventors
- 152
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 4 |
| 2003 | 4 | 2 |
| 2004 | 4 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 2 | 2 |
| 2015 | 5 | 7 |
| 2016 | 4 | 4 |
| 2017 | 5 | 4 |
| 2018 | 5 | 7 |
| 2019 | 6 | 4 |
| 2020 | 4 | 6 |
| 2021 | 5 | 8 |
| 2022 | 6 | 4 |
| 2023 | 2 | 4 |
| 2024 | 5 | 1 |
| 2025 | 4 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Opto-electronic assemblies16 Dec 2025US 12,498,529 B2Hilight Semiconductor Limited
- High bandwidth transimpedance amplifier10 Jun 2025US 12,328,105 B2BAE Systems Information and Electronic Systems Integration Inc.
- Switching power supply frequency adaptive adjustment method, system and electronic device20 May 2025US 12,308,803 B2Shenzhen Jiangnan Industrial Co., Ltd.
- High voltage amplifier circuit and analyzer apparatus21 Jan 2025US 12,206,333 B2JEOL Ltd.
- Cross-connect switch architecture10 Dec 2024US 12,167,184 B2Rensselaer Polytechnic Institute
- Method of use for photoelectric unit and amplification apparatus thereof17 Apr 2025US 2025/0125777 A1
- Cross-connect switch architecture20 Mar 2025US 2025/0097611 A1Rensselaer Polytechnic Institute
- Switching power supply frequency adaptive adjustment method, system and electronic device29 Feb 2024US 2024/0072657 A1Shenzhen Jiangnan Industrial Co., Ltd.
- High bandwidth transimpedance amplifier28 Dec 2023US 2023/0421116 A1BAE Systems Information and Electronic Systems Integration Inc.
- Modulation power supply device26 Oct 2023US 2023/0344339 A1Fujitsu Limited
Most cited
By later US patents
- Instrumentation amplifier arrangement58US 4,896,120 A1990
- Dynamic bias amplifier49US 5,216,379 A1993
- Differential transimpedance amplifier for optical communication41US 6,552,605 B1Intel Corporation · 2003
- Class D switching audio amplifier41US 6,563,377 B2Evenstar, Inc. · 2003
- Audio amplifier33US 4,638,260 A1987