C04B 22/147
Alkali-metal sulfates
Official title: {Alkali-metal sulfates; Ammonium sulfate}
C04B22/147 (Alkali-metal sulfates) appears on 49 US grants and 73 published applications in this corpus.
Search patents in C04B- Granted patents
- 49
- Published applications
- 73
- Assignees
- 48
- Inventors
- 177
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 3 |
| 2015 | 1 | 2 |
| 2016 | 3 | 2 |
| 2017 | 2 | 4 |
| 2018 | 3 | 6 |
| 2019 | 2 | 6 |
| 2020 | 7 | 3 |
| 2021 | 4 | 10 |
| 2022 | 6 | 2 |
| 2023 | 5 | 11 |
| 2024 | 4 | 8 |
| 2025 | 6 | 8 |
| 2026 | 3 | 4 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- 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
- Modified dolomite powder, preparation method thereof and concrete17 Feb 2026US 12,552,712 B2Anhui Zhongtie Engineering Material Technology Co., Ltd.
- Low carbon footprint expansive composition and methods of making and using same24 Jun 2025US 12,338,387 B2Halliburton Energy Services.Inc.
- Two-component mortar system based on aluminous cement and use thereof10 Jun 2025US 12,325,664 B2Hilti Aktiengesellschaft
- Concrete and method for preparing the same4 Jun 2026US 2026/0152437 A1Industrial Technology Research Institute
- Filler material14 May 2026US 2026/0132083 A1Laticrete International, Inc.
- Reinforced magnesium substrate and composite board with same7 May 2026US 2026/0124820 A1Oakland Global Trading Co.,Ltd.
- Active and passive integrated fireproof heat-insulating board and preparation method thereof23 Apr 2026US 2026/0109648 A1China State Construction Hailong Technology Company Limited
- Hydraulic binder compositions comprising steel making slag, a co-binder and an alkali mineral salt9 Oct 2025US 2025/0313511 A1Centre National De La Recherche Scientifique
Most cited
By later US patents
- Settable composition containing potassium sulfate18US 6,682,595 B12004
- Settable compositions and methods of use15US 9,534,165 B2Halliburton Energy Services.Inc. · 2017
- Concrete compositions with reduced drying time and methods of manufacturing same14US 9,382,157 B2U. S. Concrete, Inc. · 2016
- Accelerators for composite cement compositions10US 11,078,400 B2Halliburton Energy Services.Inc. · 2021
- Tunable control of pozzolan-lime cement compositions9US 10,047,270 B2Halliburton Energy Services.Inc. · 2018