C04B 7/12
Natural pozzuolanas
Official title: Natural pozzuolanas; Natural pozzuolana cements; {Artificial pozzuolanas or artificial pozzuolana cements other than those obtained from waste or combustion residues, e.g. burned clay; Treating inorganic materials to improve their pozzuolanic characteristics (cements containing slag C04B7/14)}
C04B7/12 (Natural pozzuolanas) appears on 92 US grants and 139 published applications in this corpus.
Search patents in C04B- Granted patents
- 92
- Published applications
- 139
- Assignees
- 86
- Inventors
- 268
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 2 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 3 | 1 |
| 2016 | 1 | 2 |
| 2017 | 4 | 4 |
| 2018 | 6 | 6 |
| 2019 | 6 | 6 |
| 2020 | 10 | 11 |
| 2021 | 1 | 9 |
| 2022 | 7 | 13 |
| 2023 | 10 | 15 |
| 2024 | 5 | 21 |
| 2025 | 10 | 18 |
| 2026 | 9 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Modifiable hardened pozzolanic material22 Sep 2026US 12,741,909 B2
- Method for producing highB purity aluminum from aluminum chloride25 Aug 2026US 12,715,778 B2Aluminum Technologies, LLC
- Hyaloclastite, sideromelane or tachylite pozzolan-based geopolymer cement and concrete and method of making and using same30 Jun 2026US 12,668,536 B2
- Decarbonized cement blends14 Apr 2026US 12,600,672 B2Sublime Systems, Inc.
- Method of calcining a clay material7 Apr 2026US 12,595,206 B2Amrize Technology Switzerland LLC
- Method of processing roadway material to prevent or reduce cracking and/or deterioration8 Oct 2026US 2026/0308052 A1
- Method of Forming a Binder Composition and Products Formed Therefrom8 Oct 2026US 2026/0308062 A1A.M.N (Natanya) Engineering and Consulting, LTD
- Use of a marl for the preparation of a pozzolanic material24 Sep 2026US 2026/0285755 A1Vicat
- Method for manufacturing composite cement10 Sep 2026US 2026/0265125 A1HSustainability GmbH
- Co2-free production of artificial pozzolans, in particular from clay10 Sep 2026US 2026/0265126 A1thyssenkrupp AG
Most cited
By later US patents
- Cementitious systems and novel methods of making the same68US 5,626,665 AAsh Grove Cement Company · 1997
- Cementitious systems and methods of making the same61US 5,788,762 AAsh Grove Cement Company · 1998
- Processed silica as a natural pozzolan for use as a cementitious component in concrete and concrete products56US 5,554,352 AConstruction Material Resources · 1996
- Cement-based compositions48US 6,027,561 AEngelhard Corporation · 2000
- Process for producing a binder for slurry, mortar, and concrete39US 4,306,912 AFlowcon Oy · 1981