G02B 6/4222
By observing back-reflected light
Official title: {by observing back-reflected light}
G02B6/4222 (By observing back-reflected light) appears on 53 US grants and 57 published applications in this corpus.
Search patents in G02B- Granted patents
- 53
- Published applications
- 57
- Assignees
- 55
- Inventors
- 144
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 4 | 6 |
| 2004 | 1 | 6 |
| 2005 | 3 | 1 |
| 2006 | 3 | 5 |
| 2007 | 2 | 1 |
| 2008 | 2 | 2 |
| 2009 | 1 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 3 | 4 |
| 2018 | 3 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 3 |
| 2021 | 3 | 0 |
| 2022 | 1 | 5 |
| 2023 | 2 | 5 |
| 2024 | 1 | 0 |
| 2025 | 2 | 5 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical devices, systems, and methods for waveguide alignment4 Aug 2026US 12,699,236 B2Mellanox Technologies, Ltd.
- Systems and methods for measuring a cleave angle of an optical fiber6 Jan 2026US 12,517,304 B2RAM Photonics Industrial, LLC
- Method and system for aligning and positioning an optical fiber and microlens array5 Aug 2025US 12,379,545 B2RAM Photonics Industrial, LLC
- Fiber block alignment structure7 Jan 2025US 12,189,196 B2POET Technologies, Inc.
- Optical fiber positioning device17 Sep 2026US 2026/0276912 A1GLOBALFOUNDRIES U. S. Inc.
- System for determining optical probe location relative to a photonic integrated circuit20 Aug 2026US 2026/0243983 A1Keysight Technologies, Inc.
- Systems and methods for measuring a cleave angle of an optical fiber18 Jun 2026US 2026/0169223 A1RAM Photonics Industrial, LLC
- Transmitting-end fiber alignment device, an optical connector, and a method for transmitting-end fiber alignment11 Jun 2026US 2026/0160961 A1PhotonIX Labs, LLC
- Demountable coupling of optical connector and optoelectronic device11 Sep 2025US 2025/0284077 A1Senko Advanced Components, Inc.
Most cited
By later US patents
- Optical coupling device for passive alignment of optoelectronic devices and fibers60US 5,913,002 AThe Whitaker Corporation · 1999
- Distributed lighting system with fiber optic controls51US 5,311,410 AHughes Aircraft Company · 1994
- Production of optical module assembly25US 5,916,458 AFujitsu Limited · 1999
- Method and apparatus for high power optical fiber injection and alignment20US 4,984,885 AGeneral Electric Company · 1991
- Servo-controlled light coupling between a light-emitting component and an optical fiber19US 4,978,190 AAlcatel · 1990