G02B 6/028
With core or cladding having graded refractive index
Official title: with core or cladding having graded refractive index {(G02B6/02033, G02B6/02295 take precedence)}
G02B6/028 (With core or cladding having graded refractive index) appears on 1,109 US grants and 1,086 published applications in this corpus.
Search patents in G02B- Granted patents
- 1,109
- Published applications
- 1,086
- Assignees
- 317
- Inventors
- 1,603
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 6 | 0 |
| 1980 | 15 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 17 | 9 |
| 2002 | 34 | 37 |
| 2003 | 35 | 46 |
| 2004 | 43 | 44 |
| 2005 | 35 | 41 |
| 2006 | 37 | 19 |
| 2007 | 31 | 27 |
| 2008 | 24 | 13 |
| 2009 | 11 | 26 |
| 2010 | 20 | 27 |
| 2011 | 14 | 36 |
| 2012 | 19 | 38 |
| 2013 | 39 | 68 |
| 2014 | 54 | 50 |
| 2015 | 56 | 59 |
| 2016 | 57 | 61 |
| 2017 | 74 | 61 |
| 2018 | 52 | 83 |
| 2019 | 61 | 65 |
| 2020 | 66 | 46 |
| 2021 | 50 | 65 |
| 2022 | 48 | 43 |
| 2023 | 43 | 46 |
| 2024 | 22 | 31 |
| 2025 | 18 | 28 |
| 2026 | 20 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Optical fiber with wide bandwidth and high gains in O+E band and regulation method thereof8 Sep 2026US 12,730,257 B2Shanghai University
- Single mode beam25 Aug 2026US 12,719,228 B2nLIGHT, Inc.
- Variable ring beam generator11 Aug 2026US 12,703,045 B2Lumentum Operations LLC
- Multicore optical fiber for high density cable1 Oct 2026US 2026/0299189 A1
- Optical fiber with a heavily down doped region1 Oct 2026US 2026/0299191 A1
- Optical fiber for high density cable10 Sep 2026US 2026/0267059 A1
- Special fiber bundle, optical receiving system based on special fiber bundle, and lidar based on optical receiving system27 Aug 2026US 2026/0251842 A1Guilin University of Technology
- Tunable Metasurface Optical Fibers for Advanced Light Manipulation13 Aug 2026US 2026/0235803 A1
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
- Large numerical aperture bend resistant multimode optical fiber263US 7,903,918 B1Corning Incorporated · 2011
- Fiber for optical transmission259US 4,715,695 ASumitomo Electric Industries, Ltd. · 1987
- Low bend loss optical fiber247US 8,081,854 B2Gwangju Institute of Science and Technology · 2011
- Glass large-core optical fibers241US 8,159,742 B2Imra America, Inc. · 2012