Synthetic Method
US-2017174608-A1 · Jun 22, 2017 · US
by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32)
by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32) · 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 | C07C67/333 |
| Official title | by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32) |
| Display label | by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32) |
| Total patents | 242 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 32 |
| 2016 | 25 |
| 2017 | 27 |
| 2018 | 18 |
| 2019 | 32 |
| 2020 | 21 |
| 2021 | 16 |
| 2022 | 25 |
| 2023 | 19 |
| 2024 | 14 |
| 2025 | 9 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing estolide using linking agent
US-9617499-B2 · Apr 11, 2017 · US
Synthesis of intermediates for producing prostacyclin derivatives
US-9593061-B2 · Mar 14, 2017 · US
Method to obtain methylene malonate via bis(hydroxymethyl) malonate pathway
US-9522381-B2 · Dec 20, 2016 · US
High purity 1,1-dicarbonyl substituted-1-alkenes and methods for their preparation
US-9518001-B1 · Dec 13, 2016 · US
Alkenes as alkyne equivalents in radical cascades terminated by fragmentations
US-2016347778-A1 · Dec 1, 2016 · US
Fluorinating agent
US-2016332877-A1 · Nov 17, 2016 · US
Process For Preparing A Carboxylic Acid
US-2016326084-A1 · Nov 10, 2016 · US
Gold complexes
US-9464097-B2 · Oct 11, 2016 · US
Nonpolar phase-soluble metathesis catalysts
US-2016264510-A1 · Sep 15, 2016 · US
Process for the production of olefinic compounds and a hydrocarbon fuel or a fraction thereof
US-2016251278-A1 · Sep 1, 2016 · US
Process for the synthesis of [6,6]-phenyl-c61butyric acid pentyl ester (pc61bp)
US-2016237018-A1 · Aug 18, 2016 · US
Branched Saturated Hydrocarbons Derived from Olefins
US-2016214923-A1 · Jul 28, 2016 · US
Metathesis catalysts and methods thereof
US-2016194343-A1 · Jul 7, 2016 · US
Process for the preparation of 4-methylpent-3-en-1-ol derivatives
US-9381507-B2 · Jul 5, 2016 · US
Nonpolar phase-soluble metathesis catalysts
US-9370770-B2 · Jun 21, 2016 · US
Methods for synthesis of olefins and derivatives
US-9365874-B2 · Jun 14, 2016 · US
Methods of converting mixtures of palmitoleic and oleic acid esters to high value products
US-9346729-B2 · May 24, 2016 · US
Systems and methods of refining natural oil feedstocks and derivatives thereof
US-9328055-B2 · May 3, 2016 · US
Device and process for producing undecylenic acid methyl ester using methyl ricinoleate as raw material
US-2016115114-A1 · Apr 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C67/333?
- CPC C07C67/333 is the Cooperative Patent Classification code for “by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32).”
- How many patents are filed under CPC C07C67/333 (by isomerisation; by change of size of the carbon skeleton (introduction or elimination of carboxyl groups C07C67/313, C07C67/32))?
- Our database includes 242 publications tagged with this CPC code.
- Is patent activity under CPC C07C67/333 growing?
- Publication counts under this code: 14 in 2024 vs 9 in 2025 (latest complete years).