C03B 3/023
Preheating
Official title: {Preheating}
C03B3/023 (Preheating) appears on 177 US grants and 82 published applications in this corpus.
Search patents in C03B- Granted patents
- 177
- Published applications
- 82
- Assignees
- 61
- Inventors
- 230
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 11 | 0 |
| 1982 | 20 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 3 |
| 2010 | 0 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 9 |
| 2014 | 0 | 3 |
| 2015 | 6 | 4 |
| 2016 | 1 | 5 |
| 2017 | 4 | 4 |
| 2018 | 8 | 6 |
| 2019 | 1 | 4 |
| 2020 | 5 | 4 |
| 2021 | 2 | 3 |
| 2022 | 1 | 2 |
| 2023 | 4 | 5 |
| 2024 | 3 | 4 |
| 2025 | 3 | 4 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Powder-material flying melting furnace having dual regenerative chambers19 May 2026US 12,631,397 B2
- Rotary batch preheater14 Apr 2026US 12,600,657 B2
- Batch and cullet proportioning apparatus9 Sep 2025US 12,410,087 B2
- Method for producing mixed raw material, method for producing molten glass, method for producing glass article, apparatus for producing molten glass, and apparatus for producing glass article24 Jun 2025US 12,338,153 B2AGC Inc.
- System for preheating glass melting furnace batch materials18 Mar 2025US 12,252,430 B2Owens-Brockway Glass Container Inc.
- Glass melting process with low co2 emission20 Aug 2026US 2026/0242269 A1Agc Glass Europe
- Rotary batch and cullet preheater system control scheme28 May 2026US 2026/0145979 A1
- Waste heat recovery system and method of recovering waste heat from a furnace21 May 2026US 2026/0138906 A1
- Glass melting process with very low to zero-co2 emission30 Apr 2026US 2026/0116803 A1Agc Glass Europe
- Rotary Batch Preheater26 Mar 2026US 2026/0084995 A1
Most cited
By later US patents
- Method of melting raw materials for glass or the like with staged combustion and preheating92US 4,634,461 APPG Industries, Inc. · 1987
- Method for efficiently using flue gas energy in a glass furnace78US 4,882,736 ASorg GmbH & Co. KG · 1989
- Method of recycling industrial waste61US 5,496,392 AEnviroscience, Inc. · 1996
- Submerged combustion melting processes for producing glass and similar materials, and systems for carrying out such processes46US 9,096,453 B2Johns Manville · 2015
- Fixed bed filtering preheater process for high temperature process furnaces45US 5,713,977 APraxair Technology, Inc. · 1998