C03B 5/20
Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
C03B5/20 (Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch) appears on 153 US grants and 110 published applications in this corpus.
Search patents in C03B- Granted patents
- 153
- Published applications
- 110
- Assignees
- 45
- Inventors
- 273
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 7 | 4 |
| 2003 | 1 | 6 |
| 2004 | 5 | 5 |
| 2005 | 3 | 6 |
| 2006 | 6 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 7 |
| 2011 | 1 | 2 |
| 2012 | 3 | 5 |
| 2013 | 2 | 6 |
| 2014 | 7 | 10 |
| 2015 | 7 | 10 |
| 2016 | 7 | 4 |
| 2017 | 11 | 10 |
| 2018 | 3 | 3 |
| 2019 | 4 | 5 |
| 2020 | 5 | 3 |
| 2021 | 1 | 2 |
| 2022 | 1 | 4 |
| 2023 | 4 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system for heat recovery in an oxy-fuel fired glass furnace15 Sep 2026US 12,735,341 B2Air Products and Chemicals, Inc.
- Fining molten material using reduced pressure2 Dec 2025US 12,486,190 B2Owens-Brockway Glass Container Inc.
- Feeder tank for a glass melter10 Sep 2024US 12,084,378 B2Owens-Brockway Glass Container Inc.
- Gradient fining tank for refining foamy molten glass and a method of using the same5 Mar 2024US 11,919,798 B2Owens-Brockway Glass Container Inc.
- Glass manufacturing27 Feb 2024US 11,912,608 B2Owens-Brockway Glass Container Inc.
- Method and System for Heat Recovery in an Oxy-Fuel Fired Glass Furnace24 Sep 2026US 2026/0285735 A1Air Products and Chemicals, Inc.
- Glass melting furnace with submerged burner, comprising an anti-slosh barrier22 Jan 2026US 2026/0022049 A1Saint-Gobain Isover
- Restricting Backflowing Molten Glass in a Refiner11 Dec 2025US 2025/0376403 A1Owens-Brockway Glass Container Inc.
- Hybrid glass manufacturing furnace with electric melting, for supplying a float unit16 Jan 2025US 2025/0019287 A1
- Method and System for Heat Recovery in an Oxy-Fuel Fired Glass Furnace9 Jan 2025US 2025/0011214 A1Air Products and Chemicals, Inc.
Most cited
By later US patents
- Method and device for melting and refining materials capable of being vitrified112US 6,460,376 B1Saint-Gobain Glass France · 2002
- Heating and agitating method for multi-stage melting and refining of glass90US 4,816,056 APPG Industries, Inc. · 1989
- 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
- Electric furnace for melting glass87US 5,613,994 ASaint-Gobain Vitrage International · 1997