C03B 2207/20
Specific substances in specified ports
Official title: Specific substances in specified ports, e.g. all gas flows specified
C03B2207/20 (Specific substances in specified ports) appears on 156 US grants and 105 published applications in this corpus.
Search patents in C03B- Granted patents
- 156
- Published applications
- 105
- Assignees
- 42
- Inventors
- 304
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 9 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 4 |
| 2002 | 10 | 9 |
| 2003 | 5 | 6 |
| 2004 | 10 | 8 |
| 2005 | 1 | 9 |
| 2006 | 3 | 5 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 1 | 6 |
| 2010 | 2 | 4 |
| 2011 | 1 | 4 |
| 2012 | 0 | 4 |
| 2013 | 8 | 4 |
| 2014 | 6 | 6 |
| 2015 | 3 | 3 |
| 2016 | 5 | 2 |
| 2017 | 5 | 2 |
| 2018 | 1 | 3 |
| 2019 | 1 | 3 |
| 2020 | 4 | 5 |
| 2021 | 2 | 4 |
| 2022 | 5 | 6 |
| 2023 | 3 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical fiber preform24 Mar 2026US 12,583,782 B2Shin-Etsu Chemical Co., Ltd.
- Apparatus and method for producing porous glass preform30 Dec 2025US 12,509,387 B2Shin-Etsu Chemical Co., Ltd.
- Methods of forming silica-titania glass articles with reduced striae dimensions11 Nov 2025US 12,466,755 B2Corning Incorporated
- Method of producing soot11 Jun 2024US 12,006,246 B2Corning Incorporated
- Apparatus and method for producing porous glass preform6 Jun 2023US 11,667,557 B2Shin-Etsu Chemical Co., Ltd.
- Methods of forming silica-titania glass articles with reduced striae dimensions1 Jan 2026US 2026/0001801 A1Corning Incorporated
- Optical fiber preform and method for producing optical fiber preform27 Feb 2025US 2025/0066239 A1Shin-Etsu Chemical Co., Ltd.
- Methods of forming silica-titania glass articles with reduced striae dimensions5 Oct 2023US 2023/0312387 A1Corning Incorporated
- Apparatus and method for producing porous glass preform20 Jul 2023US 2023/0227345 A1Shin-Etsu Chemical Co., Ltd.
- Method for manufacturing optical fiber preform and apparatus for manufacturing optical fiber preform29 Sep 2022US 2022/0306515 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Continuous optical fiber preform fabrication method65US 4,062,665 ANippon Telegraph & Telephone Public Corporation · 1977
- Optical members and blanks or synthetic silica glass and method for their production62US 5,086,352 AHeraeus Quarzglas GmbH & Co.KG · 1992
- Process for preparing glass preform for optical fiber46US 4,402,720 ANippon Telegraph & Telephone Public Corporation · 1983
- Method of using precision burners for oxidizing halide-free, silicon-containing compounds45US 5,599,371 ACorning Incorporated · 1997
- Optical members and blanks of synthetic silica glass and method for their production44US 5,325,230 AHeraeus Quarzglas GmbH & Co.KG · 1994