C04B 7/43
Heat treatment
Official title: Heat treatment, e.g. precalcining, burning, melting; Cooling {(aspects only relating to the installation F27B)}
C04B7/43 (Heat treatment) appears on 667 US grants and 506 published applications in this corpus.
Search patents in C04B- Granted patents
- 667
- Published applications
- 506
- Assignees
- 322
- Inventors
- 1,372
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 25 | 0 |
| 1978 | 22 | 0 |
| 1979 | 6 | 0 |
| 1980 | 24 | 0 |
| 1981 | 26 | 0 |
| 1982 | 15 | 0 |
| 1983 | 20 | 0 |
| 1984 | 18 | 0 |
| 1985 | 20 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 7 | 0 |
| 1989 | 9 | 0 |
| 1990 | 11 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 17 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 12 | 1 |
| 2002 | 12 | 3 |
| 2003 | 9 | 10 |
| 2004 | 7 | 7 |
| 2005 | 3 | 8 |
| 2006 | 4 | 4 |
| 2007 | 4 | 6 |
| 2008 | 3 | 10 |
| 2009 | 3 | 15 |
| 2010 | 7 | 25 |
| 2011 | 10 | 21 |
| 2012 | 16 | 12 |
| 2013 | 14 | 18 |
| 2014 | 17 | 20 |
| 2015 | 14 | 22 |
| 2016 | 15 | 22 |
| 2017 | 20 | 22 |
| 2018 | 22 | 13 |
| 2019 | 15 | 20 |
| 2020 | 7 | 17 |
| 2021 | 20 | 40 |
| 2022 | 21 | 29 |
| 2023 | 25 | 36 |
| 2024 | 12 | 45 |
| 2025 | 20 | 44 |
| 2026 | 22 | 36 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-stage clay calcination method for controlling product color1 Sep 2026US 12,723,001 B2KHD Humboldt Wedag GmbH
- Method and device for producing cement clinker1 Sep 2026US 12,723,002 B2thyssenkrupp AG
- Cement kiln burner and method for operating same11 Aug 2026US 12,704,252 B2Taiheiyo Cement Corporation
- Method and apparatus for manufacturing cement using rotary generated thermal energy28 Jul 2026US 12,692,192 B2Coolbrook Oy
- Calcination unit for decarbonating raw materials7 Jul 2026US 12,674,621 B2Fives Fcb
- Thermal coupling of cement production with gasification8 Oct 2026US 2026/0308053 A1BASF SE
- Cementitious reagents, methods of manufacturing and uses thereof1 Oct 2026US 2026/0296966 A1Terra Co2 Technology Holdings, Inc.
- Improved plasma products and methods for producing same by using multiple simultaneous electrical discharges24 Sep 2026US 2026/0290760 A1Plazer IP, LLC
- Strengthened calcium carbonate cementitious composition17 Sep 2026US 2026/0274746 A1Arelac, Inc.
- Refining and/or petrochemical facility and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy17 Sep 2026US 2026/0274747 A1Coolbrook Oy
Most cited
By later US patents
- Plasma whirl reactor apparatus and methods of use164US 7,622,693 B2Foret Plasma Labs, LLC · 2009
- Apparatus for calcining cement98US 3,975,148 AOnoda Cement Co., Ltd. · 1976
- Methods and systems for utilizing waste sources of metal oxides97US 7,754,169 B2Calera Corporation · 2010
- System and method for treating dust contained in extracted cement kiln combustion gas76US 7,749,311 B2Taiheiyo Cement Corporation · 2010
- System and method for treating dust contained in extracted cement kiln combustion gas75US 7,789,944 B2Taiheiyo Cement Corporation · 2010