C03B 2203/30
Polarisation maintaining [pm], i.e. birefringent products
Official title: Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
C03B2203/30 (Polarisation maintaining [pm], i.e. birefringent products) appears on 155 US grants and 90 published applications in this corpus.
Search patents in C03B- Granted patents
- 155
- Published applications
- 90
- Assignees
- 63
- Inventors
- 281
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 6 | 8 |
| 2003 | 5 | 2 |
| 2004 | 5 | 10 |
| 2005 | 4 | 6 |
| 2006 | 5 | 6 |
| 2007 | 6 | 4 |
| 2008 | 7 | 7 |
| 2009 | 3 | 6 |
| 2010 | 5 | 3 |
| 2011 | 5 | 5 |
| 2012 | 3 | 2 |
| 2013 | 5 | 5 |
| 2014 | 4 | 2 |
| 2015 | 1 | 5 |
| 2016 | 3 | 2 |
| 2017 | 3 | 3 |
| 2018 | 3 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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
- Polarization maintaining fiber with alignment features26 Aug 2025US 12,399,316 B2Intel Corporation
- Element for a preform, a fiber production method and an optical fiber drawn from the preform24 Sep 2024US 12,098,088 B2Nkt Photonics A/S
- Infrared-transmitting, polarization-maintaining optical fiber and method for making27 Feb 2024US 11,912,606 B2The Government of the United States of America, as represented by the Secretary of the Navy
- 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
- Optical fibers with non-circular coating9 Oct 2025US 2025/0314817 A1Corning Incorporated
- Infrared-transmitting, polarization-maintaining optical fiber and method for making20 Jun 2024US 2024/0199468 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method14 Mar 2024US 2024/0085618 A1Sumitomo Electric Industries, Ltd.
- Polarization maintaining fiber with alignment features22 Jun 2023US 2023/0194805 A1Intel Corporation
Most cited
By later US patents
- Ultra high numerical aperture optical fibers242US 7,715,672 B2Imra America, Inc. · 2010
- Method of producing elliptic core type polarization-maintaining optical fiber241US 5,482,525 AHitachi Cable, Ltd. · 1996
- Nonlinear optical fibre method of its production and use thereof234US 7,266,275 B2Crystal Fibre A/S · 2007
- Optical fiber and method for making such fiber230US 7,313,312 B2Corning Incorporated · 2007
- Polarization-maintaining optical fiber, method of manufacturing polarization-maintaining optical-fiber connecting portion, and polarization-maintaining optical-fiber connecting portion223US 7,809,223 B2Furukawa Electric Co., Ltd. · 2010