C04B 7/4407
Treatment or selection of the fuel therefor
Official title: {Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel (fuels in general C10L); Use of particular energy sources, e.g. waste hot gases from other processes}
C04B7/4407 (Treatment or selection of the fuel therefor) appears on 157 US grants and 151 published applications in this corpus.
Search patents in C04B- Granted patents
- 157
- Published applications
- 151
- Assignees
- 125
- Inventors
- 424
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 6 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 5 |
| 2009 | 0 | 4 |
| 2010 | 2 | 8 |
| 2011 | 3 | 3 |
| 2012 | 5 | 4 |
| 2013 | 4 | 6 |
| 2014 | 6 | 7 |
| 2015 | 2 | 9 |
| 2016 | 6 | 10 |
| 2017 | 8 | 6 |
| 2018 | 6 | 2 |
| 2019 | 5 | 5 |
| 2020 | 1 | 5 |
| 2021 | 5 | 10 |
| 2022 | 4 | 12 |
| 2023 | 1 | 8 |
| 2024 | 3 | 10 |
| 2025 | 7 | 16 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and device for the production of cement clinker2 Jun 2026US 12,643,816 B2Dyckerhoff AG
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- Energy-efficient, carbon-enriched cement production system and a method of producing cement clinker5 May 2026US 12,617,718 B2Tianjin Cement Industry Design & Research Institute Co., Ltd.
- System and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge24 Mar 2026US 12,583,790 B2Shandong University
- System and method for thermally treatment of air-dispersible raw material3 Feb 2026US 12,540,098 B2thyssenkrupp AG
- Cement firing facility and firing method20 Aug 2026US 2026/0242279 A1Sumitomo Osaka Cement Co., Ltd.
- Method of at least partly calcining a raw material in a process of producing a cementitious material20 Aug 2026US 2026/0242280 A1Amrize Technology Switzerland LLC
- Synthesis of cement from alternative raw materials and fuels that reduces or eliminates co2 emissions6 Aug 2026US 2026/0225957 A1Batuga Tech LLC
- Method for reusing and recycling waste generated from cement production process and system therefor30 Apr 2026US 2026/0115666 A1Sumitomo Osaka Cement Co., Ltd.
- Combustion method using fuel combustion device, cement manufacturing method, and cement firing facility30 Apr 2026US 2026/0117967 A1Sumitomo Osaka Cement Co., Ltd.
Most cited
By later US patents
- Method for energy recovery from solid hazardous waste53US 4,850,290 AAsh Grove Cement Company · 1989
- Method and apparatus for the removal of harmful and waste materials by combustion47US 4,640,681 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1987
- Control of cement clinker production by analysis of sulfur in the end product47US 5,882,190 A1999
- Apparatus for charging solid fuel to rotary kilns34US 4,930,965 AAsh Grove Cement Company · 1990
- Process for the disposal of combustible refuses32US 4,678,514 ADyckerhoff Engineering GmbH · 1987