C03B 2205/60
Optical fibre draw furnaces
C03B2205/60 (Optical fibre draw furnaces) appears on 221 US grants and 200 published applications in this corpus.
Search patents in C03B- Granted patents
- 221
- Published applications
- 200
- Assignees
- 88
- Inventors
- 527
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 4 |
| 2002 | 6 | 16 |
| 2003 | 8 | 13 |
| 2004 | 8 | 10 |
| 2005 | 9 | 14 |
| 2006 | 4 | 6 |
| 2007 | 2 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 6 |
| 2010 | 5 | 3 |
| 2011 | 2 | 7 |
| 2012 | 6 | 1 |
| 2013 | 3 | 3 |
| 2014 | 4 | 6 |
| 2015 | 4 | 7 |
| 2016 | 4 | 2 |
| 2017 | 3 | 8 |
| 2018 | 4 | 6 |
| 2019 | 6 | 17 |
| 2020 | 8 | 10 |
| 2021 | 9 | 12 |
| 2022 | 14 | 15 |
| 2023 | 9 | 8 |
| 2024 | 5 | 5 |
| 2025 | 9 | 10 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C03B 2205/62Heating means for drawingIndexing code105
- C03B 2205/80Means for sealing the preform entry or upper end of the furnaceIndexing code64
- C03B 2205/72Controlling or measuring the draw furnace temperatureIndexing code57
- C03B 2205/90Manipulating the gas flow through the furnace other than by use ofIndexing code57
- C03B 2205/82Means for sealing the fibre exit or lower end of the furnaceIndexing code37
- C03B 2205/70Draw furnace insulationIndexing code22
- C03B 2205/74Means for moving at least a part of the draw furnaceIndexing code19
- C03B 2205/61Recovering, recycling or purifying the inert gasIndexing code9
Recent patents
- Nanofiber manufacturing device and method for quantum computing18 Aug 2026US 12,709,565 B1Nanofiber Quantum Technologies, Inc.
- Optical fiber draw production systems, pressure devices and methods applying pressure to optical fiber12 May 2026US 12,623,949 B2Corning Incorporated
- Optical fiber and a glass preform manufacturing method5 May 2026US 12,617,707 B2
- Optical fiber manufacturing method and apparatus10 Mar 2026US 12,570,566 B2Furukawa Electric Co., Ltd.
- Manufacturing method of glass base material for optical fiber3 Mar 2026US 12,565,442 B2Shin-Etsu Chemical Co., Ltd.
- Glass fiber and method for producing the same25 Jun 2026US 2026/0176185 A1Nan Ya Plastics Corporation
- Methods for producing glass strand and glass yarn28 May 2026US 2026/0145986 A1Shin-Etsu Chemical Co., Ltd.
- System and method for fabrication of hollow-core fibers28 May 2026US 2026/0145987 A1Relativity Networks, Inc.
- Hollow-core optical fibers and methods for producing the same19 Feb 2026US 2026/0049019 A1Corning Incorporated
- Hollow-core optical fibers and methods for producing the same19 Feb 2026US 2026/0049020 A1Corning Incorporated
Most cited
By later US patents
- Optical fiber draw furnace68US 5,410,567 ACorning Incorporated · 1995
- High index-contrast fiber waveguides and applications61US 6,788,864 B2OmniGuide Communications · 2004
- Method and apparatus for drawing optical fibers60US 4,135,902 AWestern Electric Company, Inc. · 1979
- Single mode, single polarization optical fiber with accessible guiding region and method of forming directional coupler using same54US 4,669,814 AAndrew Corporation · 1987
- Method of making optical waveguides from glass fibers47US 3,981,705 ABell Telephone Laboratories, Incorporated · 1976