Processes For The Removal Of Rubber From Non-Hevea Plants
US-2022356273-A1 · Nov 10, 2022 · US
Purification
Purification · 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 | C08C2/02 |
| Official title | Purification |
| Display label | Purification |
| Total patents | 68 |
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 | 14 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Extractor and related methods
US-11458415-B2 · Oct 4, 2022 · US
Processes for the removal of rubber from non-hevea plants
US-11396560-B2 · Jul 26, 2022 · US
Fractionator for separating solubilized rubber from a co-solvent based miscella and related processes
US-11383180-B2 · Jul 12, 2022 · US
Processes For Removing Color Bodies From Guayule
US-2022056160-A1 · Feb 24, 2022 · US
Processes for recovering rubber from aged briquettes
US-11028188-B2 · Jun 8, 2021 · US
Extractor And Related Methods
US-2021138360-A1 · May 13, 2021 · US
Synthetic polyisoprene copolymer and producing method therefor
US-2021079148-A1 · Mar 18, 2021 · US
Process for separating non-Hevea natural rubber in solid form from solutions including it
US-10913804-B2 · Feb 9, 2021 · US
Process for the production of water and solvent-free hydrogenated nitrile rubbers
US-10882980-B2 · Jan 5, 2021 · US
Process for the production of water and solvent-free nitrile rubbers
US-10858455-B2 · Dec 8, 2020 · US
Extractor and related methods
US-10843103-B2 · Nov 24, 2020 · US
Fractionator For Separating Solubilized Rubber From A Co-Solvent Based Miscella And Related Processes
US-2020346134-A1 · Nov 5, 2020 · US
Processes for the removal of rubber from non-hevea plants
US-2020239602-A1 · Jul 30, 2020 · US
Fractionator for separating solubilized rubber from a co-solvent based miscella and related processes
US-10717021-B2 · Jul 21, 2020 · US
Ultrafiltration of polyisoolefin copolymers
US-2020181294-A1 · Jun 11, 2020 · US
Processes for the removal of rubber from non-hevea plants
US-10626194-B2 · Apr 21, 2020 · US
Processes For Recovering Rubber From Aged Briquettes
US-2019284309-A1 · Sep 19, 2019 · US
Extractor And Related Methods
US-2019224587-A1 · Jul 25, 2019 · US
Processes for recovering rubber from aged briquettes
US-10316110-B2 · Jun 11, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08C2/02?
- CPC C08C2/02 is the Cooperative Patent Classification code for “Purification.”
- How many patents are filed under CPC C08C2/02 (Purification)?
- Our database includes 68 publications tagged with this CPC code.
- Is patent activity under CPC C08C2/02 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).