G02B 6/29322
Diffractive elements of the tunable type
Official title: {Diffractive elements of the tunable type (G02B6/02195 takes precedence; optical modulation devices based on a change of the optical properties of the medium G02F1/00)}
G02B6/29322 (Diffractive elements of the tunable type) appears on 181 US grants and 114 published applications in this corpus.
Search patents in G02B- Granted patents
- 181
- Published applications
- 114
- Assignees
- 102
- Inventors
- 380
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 17 | 0 |
| 2001 | 11 | 4 |
| 2002 | 14 | 28 |
| 2003 | 20 | 24 |
| 2004 | 17 | 11 |
| 2005 | 20 | 15 |
| 2006 | 11 | 7 |
| 2007 | 11 | 3 |
| 2008 | 6 | 5 |
| 2009 | 1 | 2 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 3 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 3 | 2 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical fiber filter with ultra-wide tuning range12 May 2026US 12,625,324 B2II-Vi Delaware, Inc.
- Optical subassembly for bidirectional WDM application5 Dec 2023US 11,835,767 B2Alpine Optoelectronics Inc.
- Optical fiber filter with ultra-wide tuning range21 Nov 2023US 11,822,127 B2II-Vi Delaware, Inc.
- Single-ended output circulator11 Jul 2023US 11,698,493 B2II-Vi Delaware, Inc.
- Multi-channel, densely-spaced wavelength division multiplexing transceiver1 Sep 2020US 10,761,263 B1II-Delaware, Inc.
- Double chirp integrated waveguide bragg gratings9 Oct 2025US 2025/0314823 A1Lumentum Operations LLC
- Optical fiber filter with ultra-wide tuning range16 Nov 2023US 2023/0367074 A1II-Vi Delaware, Inc.
- Optical subassembly for bidirectional wdm application7 Sep 2023US 2023/0280538 A1Alpine Optoelectronics Inc.
- Optical fiber filter with ultra-wide tuning range23 Jun 2022US 2022/0196916 A1II-Vi Delaware, Inc.
- Single-ended output circulator23 Sep 2021US 2021/0294037 A1II-Vi Delaware, Inc.
Most cited
By later US patents
- Variable optical fiber Bragg filter arrangement226US 5,007,705 AUnited Technologies Corporation · 1991
- Incorporated Bragg filter temperature compensated optical waveguide device179US 5,042,898 AUnited Technologies Corporation · 1991
- Variable-attenuation tunable optical router96US 5,706,375 AJDS Fitel Inc. · 1998
- Compression-tuned fiber grating90US 5,469,520 AUnited Technologies Corporation · 1995
- Wavelength tracking in adjustable optical systems86US 5,982,791 AHewlett-Packard Company · 1999