C04B 7/21
With calcium sulfate containing activators
Official title: with calcium sulfate containing activators {(C04B7/1535 takes precedence)}
C04B7/21 (With calcium sulfate containing activators) appears on 20 US grants and 25 published applications in this corpus.
Search patents in C04B- Granted patents
- 20
- Published applications
- 25
- Assignees
- 29
- Inventors
- 81
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 4 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for the control of volume expansion of hydraulically setting compositions comprising steel making slag27 Jan 2026US 12,534,407 B2Sika Technology AG
- Ultralow-carbon clinker-free cement, method for preparing same and application of ultralow-carbon clinker-free cement15 Oct 2024US 12,116,319 B2Hebei University of Technology
- Granulated blast-furnace slag activator, its manufacturing method thereof, and manufacturing method of cement16 Mar 2021US 10,947,159 B2Tangshan Polar Bear Building Materials Co., Ltd.
- Cementitious binders containing pozzolanic materials13 Feb 2018US 9,890,079 B2Green Binder Technologies Ltd.
- Cementitious binders containing pozzolanic materials25 Apr 2017US 9,630,878 B2Green Binder Technologies Ltd.
- Novel ladle slag-based composition13 Aug 2026US 2026/0234054 A1Kerakoll S.P.A.
- Ground granulated blast furnace slag based binder presenting both ettringite and stratlingite phases at the hardened state2 Oct 2025US 2025/0304498 A1Centre National De La Recherche Scientifique
- Ultralow-carbon clinker-free cement, method for preparing same and application of ultralow-carbon clinker-free cement7 Dec 2023US 2023/0391673 A1Hebei University of Technology
- Transformation of lump slag into supplementary cementitious material by carbonatization2 Nov 2023US 2023/0348330 A1HConnect 2 GmbH
- Slag-based hydraulic binder, dry mortar composition comprising same and system for activating a slag-based binder11 May 2023US 2023/0142698 A1Sika Technology AG
Most cited
By later US patents
- Alkali activated supersulphated binder123US 6,409,819 B1International Mineral Technology AG · 2002
- Activated aluminosilicate binder74US 6,572,698 B1International Mineral Technology AG · 2003
- Quick setting compositions17US 5,273,579 AMitsubishi Mining & Cement Co., Ltd. · 1993
- Hydraulic binder10US 6,409,820 B1Dipl.Ing. Denes Novak · 2002
- Cementitious compositions containing feldspar and pozzolanic particulate material, and method of making said composition9US 8,066,813 B2Her Majesty the Queen in right of Canada, as represented by the Minister of Natural Resources · 2011