H04B 1/587
Using opto-couplers
Official title: {using opto-couplers (light transmission systems H04B10/00)}
H04B1/587 (Using opto-couplers) appears on 21 US grants and 3 published applications in this corpus.
Search patents in H04B- Granted patents
- 21
- Published applications
- 3
- Assignees
- 20
- Inventors
- 33
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Broadband high power TRX hybrid implementation24 Mar 2026US 12,587,231 B2Infineon Technologies AG
- System for electrical stimulation during functional MRI17 Jan 2023US 11,554,261 B2Rigshospitalet
- Opto-isolator with correction circuit17 Nov 2015US 9,191,124 B2Avago Technologies General IP (Singapore) Pte. Ltd.
- Linear, optical coupled line impedance circuit4 Jun 2002US 6,400,822 B1Texas Instruments Incorporated
- Data access arrangement having improved transmit-receive separation28 Aug 2001US 6,282,001 B1Infineon Technologies North America Corp.
- Broadband high power trx hybrid implementation22 Feb 2024US 2024/0063843 A1Infineon Technologies AG
- System for electrical stimulation during functional mri10 Sep 2020US 2020/0282209 A1Rigshospitalet
- Opto-Isolator With Correction Circuit1 May 2014US 2014/0119739 A1Avago Technologies General IP (Singapore) Pte. Ltd.
Most cited
By later US patents
- Transformer-less hybrid circuit46US 5,280,526 AAT&T Bell Laboratories · 1994
- Solid state isolation device using opto-isolators28US 5,465,298 ACermetek Microelectronics, Inc. · 1995
- Hybrid circuit and data communication apparatus24US 5,734,703 AHitachi Maxell, Ltd. · 1998
- Interface circuit and method for telephone extension lines18US 4,142,075 ABurr-Brown Research Corporation · 1979
- Transformerless hybrid circuit13US 5,528,685 AAT&T Corp. · 1996