Method of preparing heterogeneous linear carbonate using basic ion exchange resin
US-2024018086-A1 · Jan 18, 2024 · US
Purification; Separation; Stabilisation
Purification; Separation; Stabilisation · 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 | C07C68/08 |
| Official title | Purification; Separation; Stabilisation |
| Display label | Purification; Separation; Stabilisation |
| Total patents | 82 |
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 | 10 |
| 2016 | 4 |
| 2017 | 10 |
| 2018 | 7 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 16 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of preparing heterogeneous linear carbonate using acidic ion exchange resin
US-2023406810-A1 · Dec 21, 2023 · US
Method of preparing heterogeneous linear carbonate using amine-based compound catalyst
US-2023406809-A1 · Dec 21, 2023 · US
Apparatus and method of producing dimethyl carbonate by reactive distillation using hybrid heat integration
US-2023365486-A1 · Nov 16, 2023 · US
Organic carbonate production process
US-11807599-B2 · Nov 7, 2023 · US
Separation method
US-2023250052-A1 · Aug 10, 2023 · US
Linear carbonate and preparation method thereof
US-2023212108-A1 · Jul 6, 2023 · US
Methods of producing dimethyl carbonate
US-2023024976-A1 · Jan 26, 2023 · US
Process for preparing dialkyl carbonate and alkanediol
US-2022340513-A1 · Oct 27, 2022 · US
Purification of aroma chemicals
US-2022281800-A1 · Sep 8, 2022 · US
Organic carbonate production process
US-2022281799-A1 · Sep 8, 2022 · US
Process for preparing dialkyl carbonate and alkanediol
US-2022017450-A1 · Jan 20, 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
Spirobiindane derivatives and a process for preparation thereof
US-2021284595-A1 · Sep 16, 2021 · US
Process for the work-up and reuse of salt-containing process water
US-2021101815-A1 · Apr 8, 2021 · US
Method for separating dimethyl carbonate from methanol
US-10815185-B2 · Oct 27, 2020 · US
Method for producing dialkyldicarbonates using tertiary amines as catalysts
US-10800728-B2 · Oct 13, 2020 · US
Aluminum Container Containing Dicarbonate
US-2020277129-A1 · Sep 3, 2020 · US
Diaryl carbonate and method for producing the same, and method for producing an aromatic polycarbonate resin
US-2020140399-A1 · May 7, 2020 · US
Method of producing a diaryl carbonate
US-2020071255-A1 · Mar 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C68/08?
- CPC C07C68/08 is the Cooperative Patent Classification code for “Purification; Separation; Stabilisation.”
- How many patents are filed under CPC C07C68/08 (Purification; Separation; Stabilisation)?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC C07C68/08 growing?
- Publication counts under this code: 16 in 2024 vs 7 in 2025 (latest complete years).