H04B 10/674
Using a variable optical attenuator
Official title: {using a variable optical attenuator}
H04B10/674 (Using a variable optical attenuator) appears on 41 US grants and 38 published applications in this corpus.
Search patents in H04B- Granted patents
- 41
- Published applications
- 38
- Assignees
- 26
- Inventors
- 101
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 4 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 2 | 5 |
| 2017 | 3 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 0 |
| 2020 | 0 | 3 |
| 2021 | 3 | 2 |
| 2022 | 1 | 3 |
| 2023 | 7 | 2 |
| 2024 | 4 | 4 |
| 2025 | 0 | 1 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Signal level control circuitry for a fiber communications system73US 5,267,071 AScientific-Atlanta, Inc. · 1993
- Optical receiver with electrically variable attenuator52US 4,644,145 AStandard Elektrik Lorenz AG · 1987
- Optical receiver apparatus and method23US 7,477,852 B2Alcatel-Lucent USA Inc. · 2009
- Optical sparse phased array receiver10US 10,382,140 B2California Institute of Technology · 2019
- Optoelectronic equalizer circuit7US 9,496,964 B2Alcatel-Lucent USA Inc. · 2016