C04B 7/24
Cements from oil shales, residues or waste other than slag
C04B7/24 (Cements from oil shales, residues or waste other than slag) appears on 297 US grants and 288 published applications in this corpus.
Search patents in C04B- Granted patents
- 297
- Published applications
- 288
- Assignees
- 246
- Inventors
- 804
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 10 | 1 |
| 2002 | 6 | 3 |
| 2003 | 4 | 4 |
| 2004 | 4 | 6 |
| 2005 | 0 | 5 |
| 2006 | 4 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 6 |
| 2009 | 1 | 7 |
| 2010 | 2 | 6 |
| 2011 | 2 | 6 |
| 2012 | 7 | 7 |
| 2013 | 11 | 14 |
| 2014 | 12 | 18 |
| 2015 | 14 | 22 |
| 2016 | 17 | 19 |
| 2017 | 8 | 7 |
| 2018 | 6 | 6 |
| 2019 | 14 | 9 |
| 2020 | 5 | 18 |
| 2021 | 10 | 18 |
| 2022 | 10 | 19 |
| 2023 | 13 | 18 |
| 2024 | 11 | 26 |
| 2025 | 12 | 24 |
| 2026 | 10 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Low-cost four-element system cementitious material, preparation method and application thereof6 Oct 2026US 12,753,115 B2University of Science and Technology Beijing
- Method for clean and low-carbon in-situ disposal of waste incineration fly ash14 Jul 2026US 12,678,726 B2Zhejiang University
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- Method for preparing cementing material by sintering activation of coal gangue5 May 2026US 12,617,721 B2Central South University
- Agricultural waste ash as cementitious material and methods of making the same31 Mar 2026US 12,590,031 B2Colorado State University Research Foundation
- Cement compositions and methods of making the same from waste27 Aug 2026US 2026/0250190 A1The Board of Trustees of The University of Alabama
- High-voltage depletion-mode current source, transistor, and fabrication methods20 Aug 2026US 2026/0242281 A1Texas Instruments Incorporated
- Use of recycled aggregates in a method of making compositions to promote marine-life20 Aug 2026US 2026/0242282 A1Partanna Global, Inc.
- Geopolymer Formulations for Construction Materials9 Jul 2026US 2026/0193134 A1
- Method of producing cement clinker from a source of calcium sulfate11 Jun 2026US 2026/0159444 A1Amrize Technology Switzerland LLC
Most cited
By later US patents
- Masonry cement composition128US 4,268,316 AMartin Marietta Corporation · 1981
- Alkali activated supersulphated binder123US 6,409,819 B1International Mineral Technology AG · 2002
- Synthetic class C fly ash and use thereof as partial cement replacement in general purpose concrete112US 4,992,102 A1991
- Mixture for pavement bases and the like101US 4,018,617 ANicholson Realty Ltd. · 1977
- Class F. fly ash containing settable composition for general purpose concrete having high early strength and method of making same98US 5,266,111 A1993