High solids, sprayable setting type joint compound
US-12577163-B2 · Mar 17, 2026 · US
alpha-hemihydrate
alpha-hemihydrate · 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 | C04B28/146 |
| Official title | {alpha-hemihydrate} |
| Display label | alpha-hemihydrate |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 7 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Plasterboard and manufacture thereof
US-2026062358-A1 · Mar 5, 2026 · US
High water reduction powder preparation for dry mortar
US-12391616-B2 · Aug 19, 2025 · US
Branched copolymers as dispersants for mineral binders
US-12378159-B2 · Aug 5, 2025 · US
Quick-drying levelling compound for decorative floor coverings
US-2025034046-A1 · Jan 30, 2025 · US
Kit of parts suitable to form a waterproofing membrane
US-2024228378-A9 · Jul 11, 2024 · US
Perlite-free, lightweight setting-type joint compound compositions
US-2024150244-A1 · May 9, 2024 · US
Kit of parts suitable to form a waterproofing membrane
US-2024132405-A1 · Apr 25, 2024 · US
Branched copolymers as dispersants for mineral binders
US-2024059612-A1 · Feb 22, 2024 · US
Plaster formula with increased porosity
US-2023382793-A1 · Nov 30, 2023 · US
Apparatus and process with a vibratory angled plate and/or fixed horizontal plate for forming fiber-reinforced cementitious panels with controlled thickness
US-11674317-B2 · Jun 13, 2023 · US
Snap-set, ready-mix joint compound
US-11560338-B2 · Jan 24, 2023 · US
Polycondensate based water-reducer
US-11485683-B2 · Nov 1, 2022 · US
High solids, sprayable setting type joint compound
US-2022267214-A1 · Aug 25, 2022 · US
High water reduction powder preparation for dry mortar
US-2022185732-A1 · Jun 16, 2022 · US
Gypsum based building material
US-2022048823-A1 · Feb 17, 2022 · US
Apparatus and process with a vibratory angled plate and/or fixed horizontal plate for forming fiber-reinforced cementitious panels with controlled thickness
US-2021189737-A1 · Jun 24, 2021 · US
Inorganic fire protection and insulation foam and use thereof
US-10730796-B2 · Aug 4, 2020 · US
Gypsum fiber board and method for producing gypsum fiber boards
US-2020181022-A1 · Jun 11, 2020 · US
Snap-set, ready-mix joint compound
US-10669215-B2 · Jun 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B28/146?
- CPC C04B28/146 is the Cooperative Patent Classification code for “alpha-hemihydrate.”
- How many patents are filed under CPC C04B28/146 (alpha-hemihydrate)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC C04B28/146 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).