G02B 6/29361
Interference filters
Official title: {Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters}
G02B6/29361 (Interference filters) appears on 1,335 US grants and 1,099 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,335
- Published applications
- 1,099
- Assignees
- 533
- Inventors
- 2,549
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 12 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 12 | 0 |
| 1991 | 12 | 0 |
| 1992 | 4 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 14 | 0 |
| 1997 | 22 | 0 |
| 1998 | 32 | 0 |
| 1999 | 30 | 0 |
| 2000 | 41 | 0 |
| 2001 | 58 | 24 |
| 2002 | 86 | 121 |
| 2003 | 72 | 144 |
| 2004 | 106 | 106 |
| 2005 | 88 | 60 |
| 2006 | 65 | 52 |
| 2007 | 62 | 37 |
| 2008 | 47 | 27 |
| 2009 | 24 | 20 |
| 2010 | 19 | 20 |
| 2011 | 14 | 21 |
| 2012 | 16 | 11 |
| 2013 | 18 | 22 |
| 2014 | 13 | 16 |
| 2015 | 27 | 25 |
| 2016 | 26 | 35 |
| 2017 | 41 | 52 |
| 2018 | 46 | 46 |
| 2019 | 40 | 33 |
| 2020 | 42 | 50 |
| 2021 | 35 | 38 |
| 2022 | 31 | 32 |
| 2023 | 26 | 35 |
| 2024 | 28 | 34 |
| 2025 | 26 | 22 |
| 2026 | 12 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Bi-directional and multi-channel optical module with single cavity accommodating both optical transmitter and receiver assemblies11 Aug 2026US 12,706,676 B2Global Technology Inc.
- Wavelength-division multiplexing device and communications device7 Jul 2026US 12,674,936 B2Huawei Technologies Co., Ltd.
- Red green blue laser module16 Jun 2026US 12,658,676 B2KYOCERA SLD Laser, Inc.
- Optical connection structure2 Jun 2026US 12,645,040 B2Sumitomo Electric Industries, Ltd.
- Optical component constituting fiber amplifier, fiber amplifier, and manufacturing method26 May 2026US 12,640,533 B2Huawei Technologies Co., Ltd.
- Systems using microled-based interconnects20 Aug 2026US 2026/0243971 A1AvicenaTech, Corp.
- A Compact Optical Multiplexer - Demultiplexer System13 Aug 2026US 2026/0238375 A1Optimal Coatech (Guangzhou) Co., Ltd.
- Optical receiver and optical module with multiple wavelength tunable filters25 Jun 2026US 2026/0177847 A1Phovel. Co. Ltd
- Lens-type total reflection wavelength division multiplexing passive element structure18 Jun 2026US 2026/0169225 A1Foci Fiber Optic Communications, Inc.
- Optical detection circuit21 May 2026US 2026/0140321 A1NEC Corporation
Most cited
By later US patents
- High reflection isolation optical devices and the method for making the same357US 7,289,733 B1Alliance Fiber Optic Products, Inc. · 2007
- Temperature stabilization of tapered fiber optic components190US 6,658,182 B1ITF Optical Technologies Inc. · 2003
- Optical multiplexing device186US 5,583,683 AOptical Corporation of America · 1996
- Methods and apparatus for filtering an optical fiber165US 6,222,970 B1Cirrex Corp. · 2001
- Process for mounting device and optical transmission apparatus157US 6,599,769 B2Seiko Epson Corporation · 2003