C04B 7/04
Using raw materials containing gypsum , i.e. processes of the mueller-kuehne type
Official title: using raw materials containing gypsum {, i.e. processes of the Mueller-Kuehne type}
C04B7/04 (Using raw materials containing gypsum , i.e. processes of the mueller-kuehne type) appears on 26 US grants and 25 published applications in this corpus.
Search patents in C04B- Granted patents
- 26
- Published applications
- 25
- Assignees
- 36
- Inventors
- 101
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
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| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
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| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
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| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 3 |
| 2023 | 2 | 4 |
| 2024 | 1 | 5 |
| 2025 | 0 | 1 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cement compositions with 3D graphene carbons23 Jun 2026US 12,662,420 B2Lyten, Inc.
- Integrated method for the commercial and industrial utilisation of calcium sulphate whilst obtaining rare earth elements from the production of phosphoric acid28 Apr 2026US 12,612,309 B2thyssenkrupp AG
- Method for producing phosphoric acid and calcium sulphate quality suitable for a clinker process for the commercial and industrial utilization of calcium sulphate24 Mar 2026US 12,583,747 B2thyssenkrupp AG
- Method for preparing portland cement featuring early strength, low shrinkage, and low heat9 Jul 2024US 12,030,814 B21st Assignee: CHINA BUILDING MATERIALS ACADEMY CO., LTD.
- Integrated method for producing sulphur dioxide quality suitable for a sulphuric acid process from calcium sulphate/phosphogypsum from phosphoric acid production19 Dec 2023US 11,845,657 B2thyssenkrupp AG
- Synthesis of cement from alternative raw materials and fuels that reduces or eliminates co2 emissions6 Aug 2026US 2026/0225957 A1Batuga Tech LLC
- Method of producing cement clinker from a source of calcium sulfate11 Jun 2026US 2026/0159444 A1Amrize Technology Switzerland LLC
- Precipitated Calcium Carbonate (PCC) as Feedstock in Hydraulic Cement Production, and Hydraulic Cements Produced Therefrom23 Apr 2026US 2026/0109643 A1Travertine Technologies, Inc.
- High-performance concrete and admixtures3 Jul 2025US 2025/0214893 A1NZT Group Inc.
- Process to make calcium oxide or ordinary portland cement from calcium bearing rocks and minerals21 Nov 2024US 2024/0383804 A1Brimstone Energy Inc.
Most cited
By later US patents
- Process for producing cement from a flue gas desulfurization process waste product51US 5,766,339 ADravo Lime Company · 1998
- Engineered Portland cement incorporating SCMs and methods for making same22US 9,102,567 B1Roman Cement, LLC · 2015
- Calcium sulfate process for the coproduction of Portland cement clinker and concentrated sulfur dioxide adequate to manufacture sulfuric acid20US 5,049,198 A1991
- Process for producing cement and elemental sulfur from a flue gas desulfurization waste product18US 5,769,940 ADravo Lime Company · 1998
- Conversion of calcium compounds into solid and gaseous compounds13US 4,774,064 AMississippi Chemical Corporation · 1988