C03B 2203/34
Plural core other than bundles
Official title: Plural core other than bundles, e.g. double core
C03B2203/34 (Plural core other than bundles) appears on 120 US grants and 116 published applications in this corpus.
Search patents in C03B- Granted patents
- 120
- Published applications
- 116
- Assignees
- 70
- Inventors
- 330
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 5 |
| 2004 | 3 | 6 |
| 2005 | 1 | 1 |
| 2006 | 7 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 0 | 6 |
| 2012 | 0 | 2 |
| 2013 | 4 | 6 |
| 2014 | 4 | 2 |
| 2015 | 3 | 13 |
| 2016 | 8 | 5 |
| 2017 | 9 | 7 |
| 2018 | 4 | 10 |
| 2019 | 5 | 5 |
| 2020 | 5 | 6 |
| 2021 | 2 | 3 |
| 2022 | 4 | 4 |
| 2023 | 1 | 6 |
| 2024 | 4 | 3 |
| 2025 | 5 | 12 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method11 Aug 2026US 12,704,672 B2Sumitomo Electric Industries, Ltd.
- Infrared-transmitting, polarization-maintaining optical fiber and method for making12 May 2026US 12,623,947 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Method for producing a preform for producing a multicore fibre and also a preform and a multicore fibre6 Jan 2026US 12,515,979 B2J-Fiber GmbH
- Multi-core optical fiber preform, multi-core optical fiber preform production method, and multi-core optical fiber production method4 Nov 2025US 12,459,853 B2Fujikura Ltd.
- Multicore optical fiber21 Oct 2025US 12,449,589 B2Sumitomo Electric Industries, Ltd.
- 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
- Method of manufacturing multicore fiber preform and method of manufacturing multicore fiber23 Jul 2026US 2026/0209104 A1Lightera Japan Co., Ltd.
- Method of Preparation of a Multicore Fiber Preform18 Jun 2026US 2026/0167550 A1Heraeus Quartz North America LLC
- Method for producing a preform for an optical fiber18 Jun 2026US 2026/0167551 A1
- Rod insertion jig and method for producing multicore optical fiber base material11 Jun 2026US 2026/0159435 A1
Most cited
By later US patents
- Multicore optical fibre354US 6,301,420 B1The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 2001
- Multi-core optical fiber and optical communication systems227US 8,503,845 B2Alcatel Lucent · 2013
- Microstructured optical fibres90US 6,539,155 B12003
- Photonic band gap fiber67US 6,845,204 B1Crystal Fibre A/S · 2005
- Multicore glass optical fiber and methods of manufacturing such fibers49US 6,154,594 ACorning Incorporated · 2000