C03B 2205/90
Manipulating the gas flow through the furnace other than by use of
Official title: Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
C03B2205/90 (Manipulating the gas flow through the furnace other than by use of) appears on 57 US grants and 48 published applications in this corpus.
Search patents in C03B- Granted patents
- 57
- Published applications
- 48
- Assignees
- 31
- Inventors
- 156
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 5 |
| 2003 | 1 | 6 |
| 2004 | 2 | 3 |
| 2005 | 4 | 4 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 0 | 2 |
| 2019 | 1 | 5 |
| 2020 | 3 | 1 |
| 2021 | 1 | 3 |
| 2022 | 5 | 4 |
| 2023 | 4 | 0 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C03B 2205/98Using annular gas inlet distributorsIndexing code18
- C03B 2205/91By controlling the furnace gas flow rate into or out of theIndexing code17
- C03B 2205/92Using means for gradually reducing the cross-section towards the outlet or aroundIndexing code13
- C03B 2205/96Using tangential feed approximately perpendicular to the draw axisIndexing code5
Recent patents
- Optical fiber draw furnace system and method14 Oct 2025US 12,441,649 B2Corning Incorporated
- Wire-drawing optical fiber base material manufacturing method and manufacturing apparatus10 Jun 2025US 12,325,657 B2Shin-Etsu Chemical Co., Ltd.
- Method and apparatus for reclaiming gas in a fiber draw furnace14 May 2024US 11,981,596 B2Corning Incorporated
- Optical fiber forming apparatus28 Nov 2023US 11,827,555 B2Corning Incorporated
- Furnace gas feeding device, optical fiber production device, and optical fiber production method24 Oct 2023US 11,795,099 B2Sumitomo Electric Industries, Ltd.
- Furnace design to improve drawing of hollow-core fibers5 Feb 2026US 2026/0035285 A1Corning Incorporated
- Optical fiber manufacturing method and optical fiber drawing device26 Jun 2025US 2025/0206654 A1Sumitomo Electric Industries, Ltd.
- Counter-directional gas injection for a furnace system30 Jan 2025US 2025/0034025 A1Corning Incorporated
- Apparatus, system, and method for drawing an optical fiber22 Aug 2024US 2024/0279104 A1Sterlite Technologies Limited
- Wire-drawing optical fiber base material manufacturing method and manufacturing apparatus20 Oct 2022US 2022/0332627 A1Shin-Etsu Chemical Co., Ltd.
Most cited
By later US patents
- Method for drawing fibers44US 4,030,901 ABell Telephone Laboratories, Incorporated · 1977
- Method of and device for drawing an optical fiber from a solid preform consisting substantially of SiO.sub.2 and doped SiO.sub.238US 4,673,427 AU. S. Philips Corporation · 1987
- Non-contacting seal for treating chamber through which elongated material is moved25US 4,174,842 AWestern Electric Company, Inc. · 1979
- Apparatus for minimizing drawn filament diameter variation23US 4,126,436 ACorning Glass Works · 1978
- Apparatus for heating a preform from which lightguide fiber is drawn21US 4,547,644 AAT&T Technologies, Inc. · 1985