Method for Treating Gypsum and Making a Gypsum Board
US-2025122125-A1 · Apr 17, 2025 · US
This page is not indexed by search engines while we improve data quality.
containing synthetic or waste calcium sulfate cements
containing synthetic or waste calcium sulfate cements · 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 | C04B28/142 |
| Official title | {containing synthetic or waste calcium sulfate cements} |
| Display label | containing synthetic or waste calcium sulfate cements |
| Total patents | 24 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing a gypsum slurry for forming gypsum products and method of manufacturing a gypsum product
US-12036561-B2 · Jul 16, 2024 · US
A Filler Compound and Use of a Filler Compound
US-2024150632-A1 · May 9, 2024 · US
Novel masonry material utilizing recycled construction & demolition waste
US-2024010558-A1 · Jan 11, 2024 · US
Conversion of gypsum waste into foamed construction material
US-11840484-B2 · Dec 12, 2023 · US
Carbonized brick of recycled concrete powders and preparation method thereof
US-2023364824-A1 · Nov 16, 2023 · US
Masonry material utilizing recycled construction and demolition waste
US-11780774-B2 · Oct 10, 2023 · US
High-strength concrete-like fluorogypsum-based blends and production method
US-11384019-B2 · Jul 12, 2022 · US
Disalt as robust primary surfactant for calcium sulfate mixtures containing recycled gypsum
US-11345636-B2 · May 31, 2022 · US
Conversion of gypsum waste into foamed construction material
US-2022162126-A1 · May 26, 2022 · US
Gypsum board from gypsum having high level of chloride salt and a perforated sheet and methods associated therewith
US-11186066-B2 · Nov 30, 2021 · US
Gypsum board from gypsum having high level of chloride salt and a starch layer and methods associated therewith
US-11186067-B2 · Nov 30, 2021 · US
Disalt as robust primary surfactant for calcium sulfate mixtures containing recycled gypsum
US-2021188712-A1 · Jun 24, 2021 · US
A novel masonry material utilizing recycled construction & demolition waste
US-2021163354-A1 · Jun 3, 2021 · US
High-strength concrete-like fluorogypsum-based blends and production method
US-2021061713-A1 · Mar 4, 2021 · US
Method of processing plasterboards
US-2021002172-A1 · Jan 7, 2021 · US
High strength concrete-like fluorogypsum-based blends and production methods
US-10865147-B2 · Dec 15, 2020 · US
Method of Producing a Gypsum Slurry for Forming Gypsum Products and Method of Manufacturing a Gypsum Product
US-2020179939-A1 · Jun 11, 2020 · US
Gypsum board from gypsum having high level of chloride salt and a perforated sheet and methods associated therewith
US-2020055277-A1 · Feb 20, 2020 · US
Gypsum board from gypsum having high level of chloride salt and a starch layer and methods associated therewith
US-2020055278-A1 · Feb 20, 2020 · US