G02B 6/29352
In a light guide
Official title: {in a light guide}
G02B6/29352 (In a light guide) appears on 582 US grants and 553 published applications in this corpus.
Search patents in G02B- Granted patents
- 582
- Published applications
- 553
- Assignees
- 308
- Inventors
- 1,163
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 13 | 0 |
| 2000 | 16 | 0 |
| 2001 | 29 | 8 |
| 2002 | 20 | 47 |
| 2003 | 30 | 52 |
| 2004 | 43 | 36 |
| 2005 | 25 | 20 |
| 2006 | 25 | 22 |
| 2007 | 26 | 13 |
| 2008 | 11 | 10 |
| 2009 | 11 | 22 |
| 2010 | 8 | 14 |
| 2011 | 16 | 14 |
| 2012 | 5 | 15 |
| 2013 | 16 | 14 |
| 2014 | 16 | 9 |
| 2015 | 11 | 13 |
| 2016 | 15 | 19 |
| 2017 | 16 | 18 |
| 2018 | 15 | 18 |
| 2019 | 27 | 28 |
| 2020 | 28 | 27 |
| 2021 | 18 | 25 |
| 2022 | 20 | 25 |
| 2023 | 20 | 26 |
| 2024 | 22 | 18 |
| 2025 | 17 | 20 |
| 2026 | 9 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Technologies for optical demultiplexing with backwards compatibility6 Oct 2026US 12,754,364 B2Intel Corporation
- Optical flow switching using photonic integrated circuits29 Sep 2026US 12,748,263 B2Lightmatter, Inc.
- Microring resonator-based optical device with improved linearity18 Aug 2026US 12,711,367 B2Hewlett Packard Enterprise Development LP
- Integrated photonic 2×3 coupler28 Jul 2026US 12,693,475 B2Cisco Technology, Inc.
- Tunable cascaded Mach-Zehnder interferometer structures28 Jul 2026US 12,693,571 B2Intel Corporation
- Integrated photonic 2x3 coupler1 Oct 2026US 2026/0299208 A1Cisco Technology, Inc.
- System and method for thz amplification by wavelength injection of resonant tunneling diode oscillator1 Oct 2026US 2026/0303020 A1Imra America, Inc.
- Mach-zehnder interferometers having folded delay arms6 Aug 2026US 2026/0227574 A1GLOBALFOUNDRIES U. S. Inc.
- Communication device, base station, and communication system16 Jul 2026US 2026/0202677 A1Huawei Technologies Co., Ltd.
- Data transmission device and data transmission method18 Jun 2026US 2026/0169226 A1Industrial Technology Research Institute
Most cited
By later US patents
- Guided-wave optical multi/demultiplexer199US 5,499,308 AHitachi Cable, Ltd. · 1996
- Device and method for dispersion compensation in a fiber optic transmission system119US 5,522,004 ATelefonaktiebolaget LM Ericsson · 1996
- Wavelength selective optical devices using optical directional coupler115US 4,900,119 ACanadian Patents and Development Limited · 1990
- Optical device having switching function93US 5,812,709 AHitachi Cable, Ltd. · 1998
- Optical fiber modulation and demodulation system92US 5,675,674 ARockBit International · 1997