G02B 6/0281
Graded index region forming part of the central core segment
Official title: {Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core (G02B6/0288, G02B6/0286 take precedence)}
G02B6/0281 (Graded index region forming part of the central core segment) appears on 485 US grants and 453 published applications in this corpus.
Search patents in G02B- Granted patents
- 485
- Published applications
- 453
- Assignees
- 121
- Inventors
- 642
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 6 |
| 2002 | 20 | 17 |
| 2003 | 20 | 24 |
| 2004 | 15 | 24 |
| 2005 | 20 | 20 |
| 2006 | 24 | 11 |
| 2007 | 19 | 19 |
| 2008 | 12 | 8 |
| 2009 | 10 | 12 |
| 2010 | 10 | 7 |
| 2011 | 7 | 9 |
| 2012 | 5 | 12 |
| 2013 | 10 | 27 |
| 2014 | 20 | 17 |
| 2015 | 19 | 17 |
| 2016 | 22 | 21 |
| 2017 | 26 | 24 |
| 2018 | 23 | 45 |
| 2019 | 19 | 23 |
| 2020 | 37 | 21 |
| 2021 | 23 | 28 |
| 2022 | 16 | 18 |
| 2023 | 19 | 16 |
| 2024 | 10 | 10 |
| 2025 | 7 | 9 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-core optical fiber15 Sep 2026US 12,736,742 B2Sumitomo Electric Industries, Ltd.
- Single mode optical fiber suitable for ribbon applications15 Sep 2026US 12,736,743 B2
- Uncoupled-core multicore optical fiber with reduced cross talk28 Jul 2026US 12,693,469 B2Corning Incorporated
- Optical fiber with inverse triangular trench design17 Mar 2026US 12,578,525 B2Corning Incorporated
- Optical fibers, optical fiber assemblies, and optical connections having an array of optical fibers10 Feb 2026US 12,546,934 B2Corning Research & Development Corporation
- Optical fiber with a heavily down doped region1 Oct 2026US 2026/0299191 A1
- Optical fiber for high density cable10 Sep 2026US 2026/0267059 A1
- Coupler to connect a solid core fiber with a hollow core fiber13 Aug 2026US 2026/0235812 A1Relativity Networks, Inc.
- All-fiber laser beam tuning by adjustment of angular intensity distribution including a lens array2 Jul 2026US 2026/0186312 A1
- Multi-core optical fiber25 Jun 2026US 2026/0177738 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Super-large-effective-area (SLA) optical fiber and communication system incorporating the same290US 6,904,218 B2Fitel USA Corp. · 2005
- Bend insensitive single mode fiber237US 8,750,664 B2Futong Group Co., Ltd. · 2014
- Optical fiber comprising a refractive index trench131US 4,852,968 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1989
- Low dispersion, low-loss single-mode optical waveguide111US 4,715,679 ACorning Glass Works · 1987
- Dual window WDM optical fiber communication108US 5,905,838 ALucent Technologies Inc. · 1999