C04B 22/142
Sulfates
Official title: {Sulfates}
C04B22/142 (Sulfates) appears on 169 US grants and 220 published applications in this corpus.
Search patents in C04B- Granted patents
- 169
- Published applications
- 220
- Assignees
- 149
- Inventors
- 626
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 1 |
| 2003 | 5 | 2 |
| 2004 | 3 | 1 |
| 2005 | 0 | 4 |
| 2006 | 3 | 2 |
| 2007 | 1 | 3 |
| 2008 | 3 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 2 |
| 2012 | 2 | 6 |
| 2013 | 1 | 1 |
| 2014 | 2 | 6 |
| 2015 | 1 | 4 |
| 2016 | 4 | 7 |
| 2017 | 7 | 11 |
| 2018 | 7 | 17 |
| 2019 | 4 | 15 |
| 2020 | 14 | 11 |
| 2021 | 12 | 14 |
| 2022 | 13 | 21 |
| 2023 | 10 | 27 |
| 2024 | 16 | 24 |
| 2025 | 15 | 20 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual-scale toughened cement-based composite material and use thereof6 Oct 2026US 12,753,118 B2Qingdao University of Technology
- Hydraulic binder with low carbon footprint and high early strength18 Aug 2026US 12,709,575 B2ImerTech SAS
- Binder composition comprising pozzolanic material and fine filler21 Jul 2026US 12,686,638 B2Centre National de la Recherche Scientifique (CNRS)
- Process for preparing water-redispersible polymer powders for dry formulations of construction materials23 Jun 2026US 12,662,426 B2Wacker Chemie AG
- Use of a hydraulic binder containing calcium aluminate for the production of a construction material12 May 2026US 12,623,963 B2ARDEX Group GmbH
- Two-component mortar composition with temperature-responsive inhibitor17 Sep 2026US 2026/0274750 A1Hilti Aktiengesellschaft
- Manufacturing method of cured body3 Sep 2026US 2026/0257971 A1The University of Tokyo
- Accelerator for shotcrete formulation, shotcrete formulations and method for making same13 Aug 2026US 2026/0234056 A1Ecocem Materials Limited
- Process for the production of an ultra-light mineral foam16 Jul 2026US 2026/0200796 A1Amrize Technology Switzerland LLC
- Multifunctional compounds for activation of cement for use in wellbores25 Jun 2026US 2026/0176521 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Ready-mixed setting type joint compound115US 5,746,822 AUnited States Gypsum Company · 1998
- Multi-layer intumescent-ablator endothermic fire retardant compositions58US 4,632,865 AMediavault Inc. · 1986
- Methods and compositions for sealing subterranean zones30US 6,616,753 B2Halliburton Energy Services.Inc. · 2003
- Recovery of cement kiln dust through precipitation of calcium sulfate using sulfuric acid solution29US 6,613,141 B22003
- Process for preparing calcium sulfate alpha hemihydrate21US 5,093,093 APromineral Gesellschaft zur Verwendung von Mineralstoffen mbH · 1992