C03B 2203/04
Polygonal outer cross-section
Official title: Polygonal outer cross-section, e.g. triangular, square
C03B2203/04 (Polygonal outer cross-section) appears on 60 US grants and 43 published applications in this corpus.
Search patents in C03B- Granted patents
- 60
- Published applications
- 43
- Assignees
- 49
- Inventors
- 158
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 4 |
| 2015 | 2 | 4 |
| 2016 | 2 | 4 |
| 2017 | 5 | 3 |
| 2018 | 2 | 3 |
| 2019 | 3 | 3 |
| 2020 | 0 | 2 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fabrication method and use of F40 mm large-size and high-contrast21 Oct 2025US 12,448,316 B2China Building Materials Academy Co., Ltd.
- Glass optical waveguide with variable cross section4 Jun 2024US 11,999,647 B2Schott AG
- Photodarkening-resistant ytterbium-doped quartz optical fiber and preparation method therefor10 Oct 2023US 11,780,768 B2Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Process of fabrication of Erbium and Ytterbium-co-doped multi-elements silica glass based cladding-pumped fiber9 Aug 2022US 11,407,671 B2Council of Scientific and Industrial Research
- Hollow-core photonic bandgap fibers and methods of manufacturing the same15 Jun 2021US 11,034,607 B2University of Southampton
- Distributed delivery of low viscosity glass21 May 2026US 2026/0138908 A1Corning Incorporated
- Fabrication method and use of f40 mm large-size and high-contrast21 Mar 2024US 2024/0092679 A1China Building Materials Academy Co., Ltd.
- Glass optical waveguide with variable cross section30 Dec 2021US 2021/0403366 A1Schott AG
- Photodarkening-resistant ytterbium-doped quartz optical fiber and preparation method therefor29 Jul 2021US 2021/0230051 A1Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences
- Drawing system for polygonal optical fiber24 Dec 2020US 2020/0399162 A1Success Prime Corporation
Most cited
By later US patents
- Active optical fiber and method for fabricating an active optical fiber235US 8,433,168 B2Optoelectronics Research Center, Tampere University of Technology · 2013
- Optical fiber and method for making such fiber230US 7,313,312 B2Corning Incorporated · 2007
- Laser diode assembly including a cylindrical lens75US 5,081,639 AThe United States of America as represented by the United States Department of Energy · 1992
- Gas discharge display device having offset electrodes66US 4,038,577 AOwens-Illinois, Inc. · 1977
- Polarization-preserving optical fiber66US 4,274,854 ABell Telephone Laboratories, Incorporated · 1981