Powdered quick-setting agent, quick-setting material, quick-setting material cured product, and spraying method
US-2020385311-A1 · Dec 10, 2020 · US
Alkali-metal sulfates; Ammonium sulfate
Alkali-metal sulfates; Ammonium sulfate · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B22/147 |
| Official title | {Alkali-metal sulfates; Ammonium sulfate} |
| Display label | Alkali-metal sulfates; Ammonium sulfate |
| Total patents | 128 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 15 |
| 2019 | 10 |
| 2020 | 13 |
| 2021 | 17 |
| 2022 | 14 |
| 2023 | 11 |
| 2024 | 13 |
| 2025 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Treatment fluids comprising calcium aluminate cement and methods of use
US-10829678-B2 · Nov 10, 2020 · US
Rapid-hardening admixture and method for producing same
US-10829416-B2 · Nov 10, 2020 · US
Stabilized aqueous suspension for initiating setting and hardening of aluminous cement compositions
US-10822284-B2 · Nov 3, 2020 · US
Rapid-hardening cement composition
US-10800701-B2 · Oct 13, 2020 · US
Tunable control of pozzolan-lime cement compositions
US-10781355-B2 · Sep 22, 2020 · US
Copolymers having a gradient structure as dispersant for alkalinically activated binding agents
US-10745322-B2 · Aug 18, 2020 · US
Reduction in bentonite-based grout concentration in grout fluids
US-2020248063-A1 · Aug 6, 2020 · US
Construction chemical compositions comprising a bisulfite adduct of glyoxylic acid
US-10723656-B2 · Jul 28, 2020 · US
Plugging and abandoning a well using extended-life cement compositions
US-10655047-B2 · May 19, 2020 · US
Fly ash cementitious compositions
US-10647612-B2 · May 12, 2020 · US
Self-desiccating, dimensionally-stable hydraulic cement compositions with enhanced workability
US-10584061-B2 · Mar 10, 2020 · US
Accelerators for Composite Cement Compositions
US-2019367796-A1 · Dec 5, 2019 · US
Multi-component mortar system
US-2019276364-A1 · Sep 12, 2019 · US
Treatment fluids comprising calcium aluminate cement and methods of use
US-2019185729-A1 · Jun 20, 2019 · US
Reaction resin mortar curable by frontal polymerization and method for fixing anchor rods
US-10322970-B2 · Jun 18, 2019 · US
Construction chemical compositions comprising a bisulfite adduct of glyoxylic acid
US-2019177223-A1 · Jun 13, 2019 · US
Rapid-hardening admixture and method for producing same
US-2019161409-A1 · May 30, 2019 · US
Tunable control of pozzolan-lime cement compositions
US-2019136115-A1 · May 9, 2019 · US
Joint compounds, activators and methods for setting a joint compound and preventing seed setting
US-2019135697-A1 · May 9, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B22/147?
- CPC C04B22/147 is the Cooperative Patent Classification code for “Alkali-metal sulfates; Ammonium sulfate.”
- How many patents are filed under CPC C04B22/147 (Alkali-metal sulfates; Ammonium sulfate)?
- Our database includes 128 publications tagged with this CPC code.
- Is patent activity under CPC C04B22/147 growing?
- Publication counts under this code: 13 in 2024 vs 12 in 2025 (latest complete years).