C04B 28/142
Containing synthetic or waste calcium sulfate cements
Official title: {containing synthetic or waste calcium sulfate cements}
C04B28/142 (Containing synthetic or waste calcium sulfate cements) appears on 56 US grants and 64 published applications in this corpus.
Search patents in C04B- Granted patents
- 56
- Published applications
- 64
- Assignees
- 59
- Inventors
- 243
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 5 |
| 2009 | 2 | 3 |
| 2010 | 1 | 1 |
| 2011 | 2 | 0 |
| 2012 | 2 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 3 |
| 2015 | 2 | 1 |
| 2016 | 2 | 5 |
| 2017 | 0 | 0 |
| 2018 | 3 | 4 |
| 2019 | 4 | 6 |
| 2020 | 4 | 6 |
| 2021 | 4 | 5 |
| 2022 | 6 | 4 |
| 2023 | 4 | 3 |
| 2024 | 2 | 4 |
| 2025 | 1 | 2 |
| 2026 | 3 | 7 |
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
- Carbonized brick of recycled concrete powders and preparation method thereof14 Apr 2026US 12,600,058 B2Shandong High-Speed Group Co., Ltd.
- Masonry material utilizing recycled construction and demolition waste7 Apr 2026US 12,595,208 B2Washington State University
- Coal-based solid waste transport and filling integrated machine mining system and method11 Nov 2025US 12,467,362 B2Anhui University of Science and Technology
- Barium slag-modified aluminate quick-hardening special cementing material and preparation method thereof2 Apr 2024US 11,945,752 B1Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
- Hardened gypsum body, and preparation method therefor and use thereof11 Jun 2026US 2026/0158703 A1Hubei Juhai Environmental Technology Co., Ltd.
- Gypsum Panel Containing Reclaimed Gypsum and a Water-Resistant Additive11 Jun 2026US 2026/0159446 A1Gold Bond Building Products, LLC
- Full solid-waste micro-expansive concrete and preparation method thereof30 Apr 2026US 2026/0116823 A1Inner Mongolia University of Technology
- Comprehensive utilization method for iron separation tailings from magnetizing-roasted red mud23 Apr 2026US 2026/0109644 A1Zhengzhou Non-Ferrous Metals Research Institute Co. Ltd of Chalco
- Gypsum boards and methods of making them16 Apr 2026US 2026/0103427 A1CertainTeed Gypsum, Inc.
Most cited
By later US patents
- Process and apparatus for producing fiber-reinforced plaster plates55US 5,520,779 ABabcock BSH Aktiengesellschaft Vormals Buttner-Schilde-Haas AG · 1996
- Process for disposal of arsenic salts40US 4,118,243 AWaste Management of Illinois, Inc. · 1978
- Gypsum board comprisiing linings made of glass fiber non-wovens coated with an inorganic cement binder40US 5,395,685 AGebruder Knauf Westdeutsche Gipswerke KG · 1995
- Crystalline calcium sulfate dihydrate and process for making same24US 4,183,908 ASouthern California Edison Company · 1980
- Process for treating waste sludge from combustion plant desulfurization units and cementitious product of the process16US 4,108,677 A1978