Solid-solid separation of carbon from a hardly soluble alkaline earth sulfate
US-2026094889-A1 · Apr 2, 2026 · US
Sulfates of Sr or Ba
Sulfates of Sr or Ba · 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 | C01F11/462 |
| Official title | {Sulfates of Sr or Ba} |
| Display label | Sulfates of Sr or Ba |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for carbon dioxide storage utilizing carbon dioxide sequestration in an anhydrite-rich formation
US-12460513-B1 · Nov 4, 2025 · US
Spherical composite particles of barium sulfate and silica, and production method therefor
US-2025205123-A1 · Jun 26, 2025 · US
Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Production of barium sulfate from seawater
US-2024327258-A1 · Oct 3, 2024 · US
Production of barium sulfate and fracturing fluid via mixing of produced water and seawater
US-11746280-B2 · Sep 5, 2023 · US
Production of barium sulfate and fracturing fluid via mixing of produced water and seawater
US-2022396727-A1 · Dec 15, 2022 · US
Barium sulfate powder and resin composition comprising same
US-11434378-B2 · Sep 6, 2022 · US
Method for finely processing nonmetallic mineral
US-2021380490-A1 · Dec 9, 2021 · US
Powder grinding method and powder grinding machine
US-11045815-B2 · Jun 29, 2021 · US
Low alpha dose barium sulfate particle, and use and process for producing the same
US-11040888-B2 · Jun 22, 2021 · US
Barium sulfate powder and resin composition comprising same
US-2021139709-A1 · May 13, 2021 · US
Friction material composition, friction material, and friction member
US-10843933-B2 · Nov 24, 2020 · US
Low alpha dose barium sulfate particle, and use and process for producing the same
US-10836647-B2 · Nov 17, 2020 · US
Barium sulfate spherical composite powder and method for producing same
US-10759672-B2 · Sep 1, 2020 · US
Low alpha dose barium sulfate particle, and use and process for producing the same
US-2020270138-A1 · Aug 27, 2020 · US
Low alpha dose barium sulfate particle, and use and process for producing the same
US-2020270139-A1 · Aug 27, 2020 · US
Powder grinding method and powder grinding machine
US-2020156081-A1 · May 21, 2020 · US
Friction material composition, friction material, and friction member
US-2020002184-A1 · Jan 2, 2020 · US
Barium sulfate spherical composite powder and method for producing same
US-2019375652-A1 · Dec 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F11/462?
- CPC C01F11/462 is the Cooperative Patent Classification code for “Sulfates of Sr or Ba.”
- How many patents are filed under CPC C01F11/462 (Sulfates of Sr or Ba)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C01F11/462 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).