G02B 6/29346
Operating by wave or beam interference
Official title: {operating by wave or beam interference (interferometers for measuring G01B9/02)}
G02B6/29346 (Operating by wave or beam interference) appears on 2,654 US grants and 2,307 published applications in this corpus.
Search patents in G02B- Granted patents
- 2,654
- Published applications
- 2,307
- Assignees
- 974
- Inventors
- 4,677
- Latest grant
- 6 Oct 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 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 10 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 13 | 0 |
| 1988 | 21 | 0 |
| 1989 | 26 | 0 |
| 1990 | 23 | 0 |
| 1991 | 21 | 0 |
| 1992 | 8 | 0 |
| 1993 | 23 | 0 |
| 1994 | 21 | 0 |
| 1995 | 21 | 0 |
| 1996 | 27 | 0 |
| 1997 | 40 | 0 |
| 1998 | 52 | 0 |
| 1999 | 56 | 0 |
| 2000 | 67 | 0 |
| 2001 | 116 | 37 |
| 2002 | 136 | 225 |
| 2003 | 159 | 299 |
| 2004 | 222 | 202 |
| 2005 | 159 | 114 |
| 2006 | 123 | 104 |
| 2007 | 128 | 69 |
| 2008 | 79 | 47 |
| 2009 | 46 | 61 |
| 2010 | 36 | 45 |
| 2011 | 42 | 48 |
| 2012 | 27 | 42 |
| 2013 | 47 | 48 |
| 2014 | 41 | 47 |
| 2015 | 55 | 51 |
| 2016 | 54 | 78 |
| 2017 | 74 | 90 |
| 2018 | 87 | 81 |
| 2019 | 88 | 83 |
| 2020 | 89 | 97 |
| 2021 | 72 | 99 |
| 2022 | 73 | 82 |
| 2023 | 71 | 91 |
| 2024 | 72 | 68 |
| 2025 | 62 | 58 |
| 2026 | 34 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G02B 6/29361Interference filters1,335
- G02B 6/2935Mach-zehnder configuration, i.e. comprising separate splitting and combining means716
- G02B 6/29358Multiple beam interferometer external to a light guide600
- G02B 6/29349Michelson or michelson/gires-tournois configuration, i.e. based on splitting and interferometrically combining relatively126
- G02B 6/29356Interference cavity within a single light guide75
- G02B 6/29347Loop interferometers40
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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
- Broadband light source system and method and light source combiner281US 6,570,659 B2LightLab Imaging, Inc. · 2003
- Guided-wave optical multi/demultiplexer199US 5,499,308 AHitachi Cable, Ltd. · 1996
- High finesse holographic fabry-perot etalon and method of fabricating197US 5,293,272 APhysical Optics Corporation · 1994
- Temperature stabilization of tapered fiber optic components190US 6,658,182 B1ITF Optical Technologies Inc. · 2003