C04B 7/424
Oxides, hydroxides
Official title: {Oxides, Hydroxides}
C04B7/424 (Oxides, hydroxides) appears on 16 US grants and 25 published applications in this corpus.
Search patents in C04B- Granted patents
- 16
- Published applications
- 25
- Assignees
- 23
- Inventors
- 76
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 3 | 5 |
| 2022 | 0 | 2 |
| 2023 | 0 | 2 |
| 2024 | 1 | 5 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Production of activated-belite-CSA clinkers at extremely low firing temperature18 Aug 2026US 12,709,571 B2University of Kentucky Research Foundation
- Composite mineralizers/fluxes for the production of alite/calcium sulfoaluminate clinkers23 Dec 2025US 12,503,393 B2University of Kentucky Research Foundation
- Sustainable calcium hydroxide production for green cement7 Jan 2025US 12,187,621 B2Wisconsin Alumni Research Foundation
- Method for preparing low-background cement20 Aug 2024US 12,065,378 B2China Building Materials Academy Co., Ltd.
- Aluminate-enhanced type I Portland cements with short setting times and cement boards produced therefrom23 Nov 2021US 11,180,412 B2United States Gypsum Company
- Pre- and post-treatment methods for producing carbon-negative supplementary cementitious materials by direct air capture and sequestration of carbon dioxide6 Feb 2025US 2025/0042812 A1Wisconsin Alumni Research Foundation
- Cement kiln energy-saving admixture with rare earth and its preparation method16 Jan 2025US 2025/0019302 A1Baotou Hongrun Rare Earth Teciinology Co.,Ltd.
- Composite mineralizers/fluxes for the production of alite/calcium sulfoaluminate clinkers12 Dec 2024US 2024/0409464 A1University of Kentucky Research Foundation
- Method for preparing general-purpose cement31 Oct 2024US 2024/0360034 A1Hunan University of Science and Technology
- Method of preparing alkali-activated cement by stepwise calcination with sodium chloride3 Oct 2024US 2024/0327282 A1Hunan University of Science and Technology
Most cited
By later US patents
- Concrete compositions and methods35US 9,061,940 B2Calera Corporation · 2015
- Manufacture of Portland cement using spent claus catalyst22US 8,029,618 B2Saudi Arabian Oil Company · 2011
- Method for dry desulfurizing flue gases6US 5,667,582 AHeidelberger Zement AG · 1997
- Method for manufacturing cement clinker3US 5,800,610 AF. L. Smidth & Co. A/S · 1998
- Intrinsic CO2 capture process for the production of metal oxides, cement, CO2 air capture or a combination thereof1US 11,034,619 B2Innovator Energy, LLC · 2021