C03B 2207/81
Constructional details of the feed line
Official title: Constructional details of the feed line, e.g. heating, insulation, material, manifolds, filters
C03B2207/81 (Constructional details of the feed line) appears on 69 US grants and 52 published applications in this corpus.
Search patents in C03B- Granted patents
- 69
- Published applications
- 52
- Assignees
- 39
- Inventors
- 149
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 5 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 6 |
| 2006 | 1 | 0 |
| 2007 | 1 | 4 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 0 |
| 2012 | 2 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 3 | 3 |
| 2018 | 1 | 2 |
| 2019 | 1 | 4 |
| 2020 | 4 | 6 |
| 2021 | 3 | 4 |
| 2022 | 2 | 1 |
| 2023 | 3 | 2 |
| 2024 | 1 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus21 Jul 2026US 12,686,629 B2Shin-Etsu Chemical Co., Ltd.
- Apparatus and method for producing porous glass preform30 Dec 2025US 12,509,387 B2Shin-Etsu Chemical Co., Ltd.
- Porous glass base material manufacturing apparatus, method for manufacturing porous glass base material, and method for manufacturing glass base material for optical fiber29 Jul 2025US 12,371,364 B2Shin-Etsu Chemical Co., Ltd.
- Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus4 Jun 2024US 11,999,646 B2Shin-Etsu Chemical Co., Ltd.
- Manufacturing method of porous glass base material for optical fiber24 Oct 2023US 11,795,098 B2Shin-Etsu Chemical Co., Ltd.
- Homogenous silica-titania glass21 May 2026US 2026/0140435 A1Corning Incorporated
- Homogenous silica-titania glass21 May 2026US 2026/0140436 A1Corning Incorporated
- Porous glass base material manufacturing apparatus, method for manufacturing porous glass base material, and method for manufacturing glass base material for optical fiber25 Dec 2025US 2025/0388505 A1Shin-Etsu Chemical Co., Ltd.
- Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus5 Sep 2024US 2024/0294417 A1Shin-Etsu Chemical Co., Ltd.
- Porous glass base material manufacturing system and method for manufacturing glass base material4 Jul 2024US 2024/0217857 A1Shin-Etsu Chemical Co., Ltd.
Most cited
By later US patents
- Method and apparatus for supplying gaseous raw material349US 5,540,059 AShin-Etsu Quartz Products Co., Ltd. · 1996
- Continuous optical fiber preform fabrication method65US 4,062,665 ANippon Telegraph & Telephone Public Corporation · 1977
- Method of fabricating optical fiber doped with rare earth element using volatile complex54US 5,961,682 ASamsung Electronics Co., Ltd. · 1999
- Method for manufacturing an optical fibre51US 3,957,474 ANippon Telegraph & Telephone Public Corporation · 1976
- Reactants delivery system for optical waveguide manufacturing51US 4,212,663 ACorning Glass Works · 1980