C03B 5/2252
Under reduced pressure
Official title: {under reduced pressure, e.g. with vacuum refiners}
C03B5/2252 (Under reduced pressure) appears on 103 US grants and 86 published applications in this corpus.
Search patents in C03B- Granted patents
- 103
- Published applications
- 86
- Assignees
- 24
- Inventors
- 182
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 8 | 1 |
| 2002 | 4 | 5 |
| 2003 | 3 | 4 |
| 2004 | 1 | 1 |
| 2005 | 2 | 5 |
| 2006 | 3 | 0 |
| 2007 | 1 | 0 |
| 2008 | 2 | 9 |
| 2009 | 1 | 3 |
| 2010 | 3 | 4 |
| 2011 | 4 | 2 |
| 2012 | 2 | 6 |
| 2013 | 4 | 5 |
| 2014 | 6 | 5 |
| 2015 | 3 | 4 |
| 2016 | 3 | 2 |
| 2017 | 5 | 7 |
| 2018 | 1 | 2 |
| 2019 | 1 | 4 |
| 2020 | 5 | 5 |
| 2021 | 2 | 5 |
| 2022 | 3 | 2 |
| 2023 | 6 | 0 |
| 2024 | 0 | 3 |
| 2025 | 4 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fining molten material using reduced pressure2 Dec 2025US 12,486,190 B2Owens-Brockway Glass Container Inc.
- High temperature and low pressure fining of submerged combustion or other glass4 Nov 2025US 12,459,848 B2Owens-Brockway Glass Container Inc.
- Low iron, high redox ratio, and high iron, high redox ratio, soda-lime-silica glasses and methods of making same14 Oct 2025US 12,441,651 B2Vitro Flat Glass LLC
- Float glass substrate3 Jun 2025US 12,319,615 B2AGC Inc.
- Thin films printed with chalcogenide glass inks19 Dec 2023US 11,845,870 B2Boise State University
- High temperature and low pressure fining of submerged combustion or other glass22 Jan 2026US 2026/0022048 A1Owens-Brockway Glass Container Inc.
- Fining of submerged combustion or other glass17 Jul 2025US 2025/0230087 A1Owens-Brockway Glass Container Inc.
- High Temperature and Low Pressure Fining of Submerged Combustion or Other Glass12 Sep 2024US 2024/0300840 A1Owens-Brockway Glass Container Inc.
- Fining molten material using reduced pressure23 May 2024US 2024/0166545 A1Owens-Brockway Glass Container Inc.
- Low iron, high redox ratio, and high iron, high redox ratio, soda-lime-silica glasses and methods of making same18 Jan 2024US 2024/0018032 A1Vitro Flat Glass LLC
Most cited
By later US patents
- Transparent infrared absorbing glass and method of making291US 4,792,536 APPG Industries, Inc. · 1988
- Method and device for melting and refining materials capable of being vitrified112US 6,460,376 B1Saint-Gobain Glass France · 2002
- Melting and vacuum refining of glass or the like and composition of sheet97US 4,738,938 APPG Industries, Inc. · 1988
- Refining method for molten glass and an apparatus for refining molten glass89US 5,849,058 AAsahi Glass Company, Limited · 1998
- Process for melting and refining vitrifiable materials88US 6,739,152 B2Saint-Gobain Glass France · 2004