Process for preparing 3-chloro-2-vinylphenol
US-10160707-B2 · Dec 25, 2018 · US
by reaction of hydroxy compounds with sulfonic acids or derivatives thereof
by reaction of hydroxy compounds with sulfonic acids or derivatives thereof · 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 | C07C303/28 |
| Official title | by reaction of hydroxy compounds with sulfonic acids or derivatives thereof |
| Display label | by reaction of hydroxy compounds with sulfonic acids or derivatives thereof |
| Total patents | 153 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 20 |
| 2017 | 10 |
| 2018 | 18 |
| 2019 | 12 |
| 2020 | 16 |
| 2021 | 17 |
| 2022 | 14 |
| 2023 | 15 |
| 2024 | 4 |
| 2025 | 10 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing (z)-2-benzoyloxy-12-heptadecene and (2s,12z)-2-hydroxy-12-heptadecene and method for producing (2s,12z)-2-acetoxy-12-heptadecene
US-2018355386-A1 · Dec 13, 2018 · US
SYNTHETIC INTERMEDIATE OF 1-(2-DEOXY-2-FLUORO-4-THIO-ß-D-ARABINOFURANOSYL)CYTOSINE, SYNTHETIC INTERMEDIATE OF THIONUCLEOSIDE, AND METHOD FOR PRODUCING THE SAME
US-2018327377-A1 · Nov 15, 2018 · US
Synthetic intermediate of 1-(2-deoxy-2-fluoro-4-thio-β-D-arabinofuranosyl)cytosine, synthetic intermediate of thionucleoside, and method for producing the same
US-10093645-B2 · Oct 9, 2018 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-10081640-B2 · Sep 25, 2018 · US
Method for producing (Z)-2-benzoyloxy-12-heptadecene and (2S,12Z)-2-hydroxy-12-heptadecene and method for producing (2S,12Z)-2-acetoxy-12-heptadecene
US-10081820-B2 · Sep 25, 2018 · US
Method of fabricating [F-18]FEONM precursor
US-10059661-B1 · Aug 28, 2018 · US
Method for coupling an aromatic compound to an alkyne
US-2018237363-A1 · Aug 23, 2018 · US
Novel compounds for use in pcr systems and applications thereof
US-2018223334-A1 · Aug 9, 2018 · US
Specific sulfonate compounds that can be used as electrolyte solvent for lithium batteries
US-10040756-B2 · Aug 7, 2018 · US
Method of producing aliphatic aldehyde compound having terminal conjugated diene structure and intermediate therefor
US-10040742-B2 · Aug 7, 2018 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-2018201626-A1 · Jul 19, 2018 · US
Synthesis of phenylethynylbenzenes
US-9981887-B1 · May 29, 2018 · US
Process for preparing 3-chloro-2-vinylphenylsulfonates
US-2018079717-A1 · Mar 22, 2018 · US
Compounds for use in PCR systems and applications thereof
US-9914964-B2 · Mar 13, 2018 · US
Methods and compounds useful in the synthesis of orexin-2 receptor antagonists
US-2018044285-A1 · Feb 15, 2018 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-9890179-B2 · Feb 13, 2018 · US
Methods of preparing cytotoxic benzodiazepine derivatives
US-9873708-B2 · Jan 23, 2018 · US
Compositions, methods, and systems for the synthesis and use of imaging agents
US-2017355669-A1 · Dec 14, 2017 · US
Methods and compounds useful in the synthesis of orexin-2 receptor antagonists
US-9828336-B2 · Nov 28, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C303/28?
- CPC C07C303/28 is the Cooperative Patent Classification code for “by reaction of hydroxy compounds with sulfonic acids or derivatives thereof.”
- How many patents are filed under CPC C07C303/28 (by reaction of hydroxy compounds with sulfonic acids or derivatives thereof)?
- Our database includes 153 publications tagged with this CPC code.
- Is patent activity under CPC C07C303/28 growing?
- Publication counts under this code: 4 in 2024 vs 10 in 2025 (latest complete years).