C03B 37/02754
Solid fibres drawn from hollow preforms
Official title: {Solid fibres drawn from hollow preforms}
C03B37/02754 (Solid fibres drawn from hollow preforms) appears on 59 US grants and 52 published applications in this corpus.
Search patents in C03B- Granted patents
- 59
- Published applications
- 52
- Assignees
- 44
- Inventors
- 163
- Latest grant
- 5 Dec 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 6 |
| 2006 | 4 | 6 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 5 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 4 |
| 2013 | 0 | 3 |
| 2014 | 2 | 5 |
| 2015 | 6 | 3 |
| 2016 | 2 | 0 |
| 2017 | 3 | 2 |
| 2018 | 4 | 2 |
| 2019 | 2 | 3 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical fiber preform production method, optical fiber preform, and optical fiber production method5 Dec 2023US 11,834,365 B2Fujikura Ltd.
- Method for inserting a core rod into an outer cladding tube with spacer5 Nov 2019US 10,464,837 B2Heraeus Quartz North America LLC
- Method of thermally drawing structured sheets14 May 2019US 10,287,203 B2Everix, Inc.
- Method of co-drawing hybrid incompatible materials25 Dec 2018US 10,160,684 B2Flex Optronix Technologies, LLC
- Tubular semifinished product for producing an optical fiber6 Nov 2018US 10,118,854 B2Heraeus Quarzglas GmbH & Co.KG
- Optical fiber preform22 May 2025US 2025/0162925 A1Fujikura Ltd.
- Method and semi-finished product for fabricating multicore fibers17 Oct 2024US 2024/0345313 A1Heraeus Quarzglas GmbH & Co.KG
- Optical fiber preform production method, optical fiber preform, and optical fiber production method15 Feb 2024US 2024/0051865 A1Fujikura Ltd.
- Method for drawing an optical fiber using rod-in cylinder technique2 Mar 2023US 2023/0060842 A1Sterlite Technologies Limited
- Manufacturing of optical fibers with symmetry-breaking longitudinal protrusions17 Jun 2021US 2021/0184418 A1Coractive High-Tech Inc.
Most cited
By later US patents
- Method of making glass optical waveguide60US 3,932,162 ACorning Glass Works · 1976
- Optical fiber with micro-structured cladding33US 7,072,552 B2Nufern · 2006
- Collapsing a multitube assembly and subsequent optical fiber drawing in the same furnace25US 6,460,378 B12002
- Manufacturing method of an optical waveguide22US 4,123,483 ASumitomo Electric Industries, Ltd. · 1978
- Method of making polarization retaining fiber with an elliptical core, with collapsed apertures22US 5,149,349 ACorning Incorporated · 1992