G02F 2203/055
Wavelength filtering
Official title: wavelength filtering
G02F2203/055 (Wavelength filtering) appears on 592 US grants and 543 published applications in this corpus.
Search patents in G02F- Granted patents
- 592
- Published applications
- 543
- Assignees
- 370
- Inventors
- 1,422
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 12 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 9 |
| 2002 | 15 | 21 |
| 2003 | 24 | 24 |
| 2004 | 20 | 23 |
| 2005 | 12 | 22 |
| 2006 | 23 | 19 |
| 2007 | 20 | 30 |
| 2008 | 21 | 7 |
| 2009 | 10 | 20 |
| 2010 | 13 | 16 |
| 2011 | 9 | 9 |
| 2012 | 13 | 13 |
| 2013 | 11 | 9 |
| 2014 | 14 | 17 |
| 2015 | 12 | 14 |
| 2016 | 17 | 19 |
| 2017 | 18 | 40 |
| 2018 | 28 | 56 |
| 2019 | 40 | 39 |
| 2020 | 33 | 26 |
| 2021 | 28 | 26 |
| 2022 | 26 | 21 |
| 2023 | 23 | 19 |
| 2024 | 16 | 21 |
| 2025 | 16 | 15 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid crystal grating and display device11 Aug 2026US 12,704,754 B2Shanghai Tianma Microelectronics Co., Ltd.
- Wavelength converter and optical transmission system14 Jul 2026US 12,681,358 B2FINITY Inc.
- Electronic device26 May 2026US 12,638,715 B2Innolux Corporation
- Split NVIS filter design14 Apr 2026US 12,601,865 B2Rockwell Collins, Inc.
- Optical frequency comb generator control device17 Mar 2026US 12,578,613 B2Suzhou Hyc Technology Co., Ltd.
- Configuring optical circuits for filtering optical waves8 Oct 2026US 2026/0310010 A1Analog Photonics LLC
- Optical filter with improved viewing angle characteristics30 Apr 2026US 2026/0118560 A1Alphamicron Incorporated
- Quantum dot color filter ink compositions and devices utilizing the same5 Mar 2026US 2026/0063950 A1Kateeva, Inc.
- Optical apparatus and wavelength-tunable laser26 Feb 2026US 2026/0056442 A1Furukawa Electric Co., Ltd.
- Resonant cavity switching (rcs) and refractive index modulating (rim) devices12 Feb 2026US 2026/0044032 A1Blue Laser Fusion, Inc.
Most cited
By later US patents
- Frequency selective interwaveguide coupler260US 4,026,632 ACanadian Patents and Development Limited · 1977
- Chiral smectic liquid crystal optical modulators having variable retardation259US 5,381,253 ABoard of Regents of the University of Colorado · 1995
- Variable optical fiber Bragg filter arrangement226US 5,007,705 AUnited Technologies Corporation · 1991
- Resonator modulators and wavelength routing switches145US 6,052,495 AMassachusetts Institute of Technology · 2000
- Active wavelength selection with resonant devices131US 6,215,928 B1Yeda Research and Development Co. Ltd. · 2001