G02B 6/29389
Bandpass filtering
Official title: {Bandpass filtering, e.g. 1x1 device rejecting or passing certain wavelengths (G02B6/2938 takes precedence)}
G02B6/29389 (Bandpass filtering) appears on 152 US grants and 146 published applications in this corpus.
Search patents in G02B- Granted patents
- 152
- Published applications
- 146
- Assignees
- 122
- Inventors
- 351
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 19 |
| 2003 | 8 | 13 |
| 2004 | 16 | 15 |
| 2005 | 14 | 10 |
| 2006 | 8 | 5 |
| 2007 | 10 | 5 |
| 2008 | 3 | 2 |
| 2009 | 0 | 3 |
| 2010 | 2 | 4 |
| 2011 | 2 | 1 |
| 2012 | 1 | 3 |
| 2013 | 3 | 5 |
| 2014 | 4 | 2 |
| 2015 | 3 | 3 |
| 2016 | 4 | 7 |
| 2017 | 5 | 3 |
| 2018 | 3 | 9 |
| 2019 | 8 | 8 |
| 2020 | 10 | 4 |
| 2021 | 4 | 6 |
| 2022 | 4 | 3 |
| 2023 | 4 | 4 |
| 2024 | 3 | 3 |
| 2025 | 4 | 4 |
| 2026 | 1 | 4 |
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.
- System for integrated photonic notch filter11 Nov 2025US 12,468,091 B2Psiquantum, Corp.
- Double-layered antisymmetric two mode Bragg gratings14 Oct 2025US 12,442,981 B2Cisco Technology, Inc.
- Wavelength-stabilized broadband light source12 Aug 2025US 12,386,118 B2Exalos AG
- Optical amplification apparatus and optical amplification method29 Jul 2025US 12,374,851 B2NEC Corporation
- Multiple linear array seeker19 Mar 2026US 2026/0078984 A1BAE Systems Information and Electronic Systems Integration Inc.
- Method and system for integrated photonic notch filter29 Jan 2026US 2026/0029583 A1Psiquantum, Corp.
- Delivery fiber assembly and a broad band source15 Jan 2026US 2026/0016628 A1Nkt Photonics A/S
- Multi-ring resonator shared bus structures for optical communications8 Jan 2026US 2026/0009950 A1InfiniLink Inc.
- Optical transmitter unit, optical receiver unit and optical transceiver unit24 Jul 2025US 2025/0237824 A1Microsoft Technology Licensing, LLC
Most cited
By later US patents
- Grin lensed optical device108US 5,790,314 AJDS Fitel Inc. · 1998
- Wavelength selective optical coupler57US 4,466,694 AHer Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government · 1984
- Wavelength selective optical switch56US 6,320,996 B1Optical Coating Laboratory, Inc. · 2001
- Optical coupling devices51US 4,550,975 AAT&T Bell Laboratories · 1985
- All-fiber acousto-optic tunable filter34US 6,021,237 AKorea Advanced Institute of Science and Technology · 2000