C04B 28/16
Containing anhydrite
Official title: containing anhydrite {, e.g. Keene's cement}
C04B28/16 (Containing anhydrite) appears on 97 US grants and 134 published applications in this corpus.
Search patents in C04B- Granted patents
- 97
- Published applications
- 134
- Assignees
- 76
- Inventors
- 344
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 3 | 2 |
| 2011 | 2 | 5 |
| 2012 | 2 | 5 |
| 2013 | 4 | 7 |
| 2014 | 5 | 6 |
| 2015 | 2 | 5 |
| 2016 | 6 | 7 |
| 2017 | 7 | 7 |
| 2018 | 10 | 9 |
| 2019 | 4 | 9 |
| 2020 | 10 | 5 |
| 2021 | 4 | 3 |
| 2022 | 2 | 14 |
| 2023 | 2 | 11 |
| 2024 | 8 | 12 |
| 2025 | 4 | 11 |
| 2026 | 8 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Flexible composite25 Aug 2026US 12,716,020 B2Concrete Canvas Technology Ltd.
- Hydraulic binder with low carbon footprint and high early strength18 Aug 2026US 12,709,575 B2ImerTech SAS
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- Ternary hydraulic binder composition12 May 2026US 12,623,966 B2Sika Technology AG
- Finely ground portland cement clinker in a cementitious multi-component mortar system for use as an inorganic chemical fastening system31 Mar 2026US 12,590,033 B2Hilti Aktiengesellschaft
- Hydraulic composition for ultra-high performance concrete and ultra-high performance grout8 Oct 2026US 2026/0308054 A1Sika Technology AG
- Synthesis of cement from alternative raw materials and fuels that reduces or eliminates co2 emissions6 Aug 2026US 2026/0225957 A1Batuga Tech LLC
- Filler material14 May 2026US 2026/0132083 A1Laticrete International, Inc.
- Process for preparing wet concrete compositions and a method for controlling mixability, rheology and/or open time of wet concrete compositions12 Feb 2026US 2026/0042708 A1Centre National De La Recherche Scientifique
- Use of carrageenan as a viscosity-modifying admixture in a flowable cementitious suspensions16 Oct 2025US 2025/0320159 A1
Most cited
By later US patents
- Rapid setting cementitious composition129US 6,641,658 B1United States Gypsum Company · 2003
- Anhydrite cellular concrete and composite building elements49US 4,233,080 AProduits Chimiques Ugine Kuhlmann · 1980
- Gypsum-based composite materials reinforced by cellulose ethers34US 6,902,797 B2Innovative Construction and Building Materials · 2005
- Fire resistant gypsum board containing mineral wool fibers and method28US 4,557,973 AUnited States Gypsum Company · 1985
- Reinforced wallboard23US 6,841,232 B2Innovative Construction and Building Materials · 2005