G02B 6/02333
Core having higher refractive index than cladding
Official title: {Core having higher refractive index than cladding, e.g. solid core, effective index guiding}
G02B6/02333 (Core having higher refractive index than cladding) appears on 195 US grants and 221 published applications in this corpus.
Search patents in G02B- Granted patents
- 195
- Published applications
- 221
- Assignees
- 111
- Inventors
- 456
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 3 |
| 2002 | 6 | 11 |
| 2003 | 11 | 6 |
| 2004 | 7 | 9 |
| 2005 | 5 | 12 |
| 2006 | 6 | 11 |
| 2007 | 12 | 9 |
| 2008 | 8 | 20 |
| 2009 | 11 | 20 |
| 2010 | 18 | 14 |
| 2011 | 11 | 8 |
| 2012 | 10 | 13 |
| 2013 | 8 | 11 |
| 2014 | 13 | 5 |
| 2015 | 11 | 3 |
| 2016 | 4 | 7 |
| 2017 | 7 | 5 |
| 2018 | 5 | 10 |
| 2019 | 9 | 9 |
| 2020 | 5 | 7 |
| 2021 | 5 | 3 |
| 2022 | 6 | 3 |
| 2023 | 2 | 6 |
| 2024 | 5 | 9 |
| 2025 | 3 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method of laser modification of an optical fibre3 Jun 2025US 12,321,007 B2Oxford University Innovation Limited
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- Photonic crystal fiber13 Aug 2026US 2026/0235802 A1ASML Netherlands B. V.
- Multi-wavelength Sources based on Parametric Amplification2 Jul 2026US 2026/0188964 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Hole assisted fiber and design method11 Jun 2026US 2026/0160939 A1NTT, Inc.
- Multilayer structure having a melt extruded water absorbing polyolefin layer9 Apr 2026US 2026/0098995 A1PolyChem Alloy, Inc.
- Method of laser modification of an otpical fibre14 Aug 2025US 2025/0258334 A1Oxford University Innovation Limited
Most cited
By later US patents
- Article comprising a micro-structured optical fiber, and method of making such fiber283US 5,802,236 ALucent Technologies Inc. · 1998
- Optical coupler, a method of its fabrication and use252US 7,532,792 B2Crystal Fibre A/S · 2009
- Ultra high numerical aperture optical fibers242US 7,715,672 B2Imra America, Inc. · 2010
- Glass large-core optical fibers241US 8,159,742 B2Imra America, Inc. · 2012
- Optical transmission system and multi-core optical fiber235US 8,755,659 B2Furukawa Electric Co., Ltd. · 2014