G02F 1/3132
Of directional coupler type
Official title: {of directional coupler type}
G02F1/3132 (Of directional coupler type) appears on 630 US grants and 406 published applications in this corpus.
Search patents in G02F- Granted patents
- 630
- Published applications
- 406
- Assignees
- 289
- Inventors
- 1,085
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 0 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 10 | 0 |
| 1988 | 14 | 0 |
| 1989 | 16 | 0 |
| 1990 | 15 | 0 |
| 1991 | 18 | 0 |
| 1992 | 18 | 0 |
| 1993 | 15 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 21 | 0 |
| 1997 | 14 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 10 | 0 |
| 2001 | 18 | 2 |
| 2002 | 12 | 13 |
| 2003 | 18 | 31 |
| 2004 | 22 | 20 |
| 2005 | 15 | 21 |
| 2006 | 19 | 16 |
| 2007 | 11 | 20 |
| 2008 | 16 | 15 |
| 2009 | 11 | 21 |
| 2010 | 20 | 12 |
| 2011 | 13 | 9 |
| 2012 | 8 | 7 |
| 2013 | 11 | 12 |
| 2014 | 10 | 6 |
| 2015 | 9 | 12 |
| 2016 | 17 | 13 |
| 2017 | 14 | 26 |
| 2018 | 21 | 21 |
| 2019 | 19 | 21 |
| 2020 | 18 | 11 |
| 2021 | 10 | 23 |
| 2022 | 14 | 14 |
| 2023 | 19 | 11 |
| 2024 | 12 | 24 |
| 2025 | 9 | 13 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Integrated photonic 2×3 coupler28 Jul 2026US 12,693,475 B2Cisco Technology, Inc.
- Methods and apparatuses for photonic filtering using nonuniform lattice filters2 Jun 2026US 12,645,029 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Device for switching optical signal5 May 2026US 12,619,124 B2Electronics and Telecommunications Research Institute
- System, method and apparatus for non-mechanical optical and photonic beam steering14 Apr 2026US 12,601,950 B2Exciting Technology LLC
- Broadband optical switches based on a ring-assisted Mach-Zhender interferometer10 Mar 2026US 12,572,048 B2GLOBALFOUNDRIES U. S. Inc.
- Integrated photonic 2x3 coupler1 Oct 2026US 2026/0299208 A1Cisco Technology, Inc.
- Triply resonant electro-optic transducers10 Sep 2026US 2026/0267177 A1International Business Machines Corporation
- Optical switches including multiple ring resonators27 Aug 2026US 2026/0251949 A1GLOBALFOUNDRIES U. S. Inc.
- A broadband photonic coupler20 Aug 2026US 2026/0243957 A1Agency for Science, Technology and Research
- An optical coupling device6 Aug 2026US 2026/0230188 A1Salience Labs Ltd
Most cited
By later US patents
- Frequency selective interwaveguide coupler260US 4,026,632 ACanadian Patents and Development Limited · 1977
- Optical modulation apparatus and measurement method198US 5,091,983 A1992
- Optic switch164US 6,687,427 B2Intel Corporation · 2004
- Planar optical waveguide, modulator, variable coupler and switch158US 4,166,669 AMassachusetts Institute of Technology · 1979
- Variable optical coupler155US 3,976,358 AInternational Standard Electric Corporation · 1976