C04B 7/438
Evacuating at least part of the heat treated material before the final
Official title: {Evacuating at least part of the heat treated material before the final burning or melting step, the evacuated material being used as a cement as such}
C04B7/438 (Evacuating at least part of the heat treated material before the final) appears on 6 US grants and 2 published applications in this corpus.
Search patents in C04B- Granted patents
- 6
- Published applications
- 2
- Assignees
- 6
- Inventors
- 15
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
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| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
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| 2004 | 0 | 0 |
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| 2009 | 0 | 0 |
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| 2011 | 0 | 0 |
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| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for reforming the fly ash14 Jan 2025US 12,195,407 B2Tokuyama Corporation
- Sorting device19 Nov 2024US 12,145,895 B2Taiheiyo Engineering Corporation Taiheiyo Cement Corporation
- Method for producing a hydraulic binder16 Jun 1992US 5,122,190 ASouthdown, Inc.
- Method for the desulfurization of flue gas of a firing system6 Jan 1987US 4,634,583 AKlockner-Humboldt-Deutz Aktiengesellschaft
- Method and apparatus for producing a hydraulic binder3 Nov 1981US 4,298,340 AKlockner-Humboldt-Deutz Aktiengesellschaft
Most cited
By later US patents
- Method for the desulfurization of flue gas of a firing system9US 4,634,583 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1987
- Method for producing a hydraulic binder4US 5,122,190 ASouthdown, Inc. · 1992
- Method and apparatus for producing a hydraulic binder3US 4,236,932 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1980
- Method and apparatus for producing a hydraulic binder3US 4,298,340 AKlockner-Humboldt-Deutz Aktiengesellschaft · 1981