Natural crystalline colorant and process for production
US-2023374266-A1 · Nov 23, 2023 · US
by heating (B01D9/0022, B01D9/0027 take precedence)
by heating (B01D9/0022, B01D9/0027 take precedence) · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01D9/0031 |
| Official title | {by heating (B01D9/0022, B01D9/0027 take precedence)} |
| Display label | by heating (B01D9/0022, B01D9/0027 take precedence) |
| Total patents | 94 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 12 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 9 |
| 2022 | 4 |
| 2023 | 13 |
| 2024 | 15 |
| 2025 | 10 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wastewater treatment method and apparatus based on hydrate-based water vapor adsorption
US-2023365430-A1 · Nov 16, 2023 · US
Process for recovering titanium dioxide
US-2023220516-A1 · Jul 13, 2023 · US
Process and apparatus for preparing purified styrene composition from styrene containing feedstock
US-2023174440-A1 · Jun 8, 2023 · US
Refining method
US-2023167577-A1 · Jun 1, 2023 · US
Refining method
US-2023150958-A1 · May 18, 2023 · US
Natural crystalline colorant and process for production
US-11578187-B2 · Feb 14, 2023 · US
Method for producing bis(fluorosulfonyl)amide alkali metal salt powder
US-11492258-B2 · Nov 8, 2022 · US
Electrode active material, method for manufacturing same, and lithium secondary battery comprising same
US-11440802-B2 · Sep 13, 2022 · US
Natural crystalline colorant and process for production
US-2022220282-A1 · Jul 14, 2022 · US
Method for concentrating and purifying eluate brine for the production of a purified lithium compound
US-2022144655-A1 · May 12, 2022 · US
Diaryl carbonate and method for producing the same, and method for producing an aromatic polycarbonate resin
US-11142506-B2 · Oct 12, 2021 · US
Natural crystalline colorant and process for production
US-2021198451-A1 · Jul 1, 2021 · US
Process and method for refining lithium carbonate starting from an impure lithium chloride solution
US-2021180153-A1 · Jun 17, 2021 · US
Electrode active material, method for manufacturing same, and lithium secondary battery comprising same
US-2021147241-A1 · May 20, 2021 · US
Crystalline solids of 3-palmitoyl-amido-1,2-propanediol and 3-palmitoyl-amido-2-hydroxy-1-dimethoxytriphenylmethylether-propane and methods of making and using the same
US-2021147342-A1 · May 20, 2021 · US
Method for producing bis(fluorosulfonyl)amide alkali metal salt powder
US-2021114877-A1 · Apr 22, 2021 · US
Natural crystalline colorant and process for production
US-10982070-B2 · Apr 20, 2021 · US
Method for producing cocrystals by means of flash evaporation
US-10946305-B2 · Mar 16, 2021 · US
Method and device for continuous salt extraction from brine
US-2021047203-A1 · Feb 18, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D9/0031?
- CPC B01D9/0031 is the Cooperative Patent Classification code for “by heating (B01D9/0022, B01D9/0027 take precedence).”
- How many patents are filed under CPC B01D9/0031 (by heating (B01D9/0022, B01D9/0027 take precedence))?
- Our database includes 94 publications tagged with this CPC code.
- Is patent activity under CPC B01D9/0031 growing?
- Publication counts under this code: 15 in 2024 vs 10 in 2025 (latest complete years).