G02B 6/02323
Core having lower refractive index than cladding
Official title: {Core having lower refractive index than cladding, e.g. photonic band gap guiding}
G02B6/02323 (Core having lower refractive index than cladding) appears on 389 US grants and 506 published applications in this corpus.
Search patents in G02B- Granted patents
- 389
- Published applications
- 506
- Assignees
- 185
- Inventors
- 810
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 2 |
| 2002 | 4 | 15 |
| 2003 | 11 | 4 |
| 2004 | 5 | 13 |
| 2005 | 9 | 21 |
| 2006 | 9 | 21 |
| 2007 | 19 | 18 |
| 2008 | 28 | 20 |
| 2009 | 12 | 23 |
| 2010 | 23 | 14 |
| 2011 | 16 | 11 |
| 2012 | 9 | 12 |
| 2013 | 13 | 12 |
| 2014 | 10 | 9 |
| 2015 | 7 | 8 |
| 2016 | 12 | 14 |
| 2017 | 12 | 12 |
| 2018 | 12 | 11 |
| 2019 | 11 | 20 |
| 2020 | 18 | 26 |
| 2021 | 20 | 29 |
| 2022 | 28 | 34 |
| 2023 | 27 | 26 |
| 2024 | 20 | 43 |
| 2025 | 27 | 28 |
| 2026 | 26 | 60 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical element for generation of broadband radiation29 Sep 2026US 12,748,339 B2ASML Netherlands B. V.
- Hollow-core optical fibers22 Sep 2026US 12,742,925 B2Corning Incorporated
- Anti-resonant optical component and method for the production of same8 Sep 2026US 12,730,258 B2Heraeus Quarzglas GmbH & Co.KG
- Method for dividing optical fibre18 Aug 2026US 12,710,591 B2Microsoft Technology Licensing, LLC
- Hollow core optical fiber and a laser system28 Jul 2026US 12,693,470 B2Nkt Photonics A/S
- Characterizing structural and geometric properties of optical fibers8 Oct 2026US 2026/0309581 A1Corning Incorporated
- Anti-resonant hollow core fiber17 Sep 2026US 2026/0276882 A1Heraeus Quarzglas GmbH & Co.KG
- Hollow core optical fibre drawing method with modified preform10 Sep 2026US 2026/0265114 A1University of Southampton
- Infrared-transmitting, polarization-maintaining optical fiber and method for making27 Aug 2026US 2026/0250178 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Anti-resonant hollow core optical fiber with contacting cladding elements with multiply nested capillaries27 Aug 2026US 2026/0251841 A1Corning Incorporated
Most cited
By later US patents
- Thermal sensing fiber devices242US 7,567,740 B2Massachusetts Institute of Technology · 2009
- Polarization maintaining optical fiber with improved polarization maintaining property231US 6,788,865 B2Nippon Telegraph and Telephone Corporation · 2004
- Thermal sensing fiber devices228US 7,805,029 B2Massachusetts Institute of Technology · 2010
- Method and apparatus for low-loss signal transmission224US 7,315,678 B2California Institute of Technology · 2008
- Holey optical fibres212US 6,968,107 B2University of Southampton · 2005