Method for preparing oligomer
US-11964925-B2 · Apr 23, 2024 · US
by treatment giving rise to a chemical modification
by treatment giving rise to a chemical modification · 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 | C07B63/02 |
| Official title | by treatment giving rise to a chemical modification |
| Display label | by treatment giving rise to a chemical modification |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 11 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Novel salts, crystals, and co-crystals
US-2023312573-A1 · Oct 5, 2023 · US
Photochemical Separations and Compositions
US-2023278939-A1 · Sep 7, 2023 · US
Method for purifying organic compound and method for producing organic compound
US-2023234975-A1 · Jul 27, 2023 · US
Method for Preparing Oligomer
US-2023098226-A1 · Mar 30, 2023 · US
Method for producing purified dialkyl-furan-2,5-dicarboxylate
US-11603360-B2 · Mar 14, 2023 · US
Photochemical separations and compositions
US-11591277-B2 · Feb 28, 2023 · US
Optically-active cyclopentenone derivatives
US-11407772-B2 · Aug 9, 2022 · US
Optically-active cyclopentenone derivatives
US-2021300953-A1 · Sep 30, 2021 · US
Method of 4-boronophenylalanine production
US-11098067-B2 · Aug 24, 2021 · US
Process for treating a dicarboxylic acid composition
US-11060197-B2 · Jul 13, 2021 · US
Integrated process for maximizing recovery of aromatics
US-11040926-B2 · Jun 22, 2021 · US
Method for producing 2-acetyl-4h,9h-naphtho[2,3-b]furan-4,9-dione
US-2021070724-A1 · Mar 11, 2021 · US
Integrated process for maximizing recovery of aromatics
US-2021024434-A1 · Jan 28, 2021 · US
Purification method and production method of difluoromethyl-1, 2, 2, 2-tetrafluoroethyl ether
US-10899692-B2 · Jan 26, 2021 · US
Method for producing 2-acetyl-4H,9H-naphtho[2,3-b]furan-4,9-dione
US-10875835-B2 · Dec 29, 2020 · US
Method of 4-boronophenylalanine production
US-2020392163-A1 · Dec 17, 2020 · US
Purification Method and Production Method of Difluoromethyl-1, 2, 2, 2-Tetrafluoroethyl Ether
US-2020339494-A1 · Oct 29, 2020 · US
Method for producing purified dialkyl-furan-2,5-dicarboxylate
US-2020331879-A1 · Oct 22, 2020 · US
Method for producing purified dialkyl-furan-2,5-dicarboxylate
US-10696645-B2 · Jun 30, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07B63/02?
- CPC C07B63/02 is the Cooperative Patent Classification code for “by treatment giving rise to a chemical modification.”
- How many patents are filed under CPC C07B63/02 (by treatment giving rise to a chemical modification)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC C07B63/02 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).