Mandelic acid condensation polymers
US-9527793-B2 · Dec 27, 2016 · US
by isomerisation; by change of size of the carbon skeleton
by isomerisation; by change of size of the carbon skeleton · 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 | C07C51/353 |
| Official title | by isomerisation; by change of size of the carbon skeleton |
| Display label | by isomerisation; by change of size of the carbon skeleton |
| Total patents | 245 |
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 | 48 |
| 2016 | 32 |
| 2017 | 38 |
| 2018 | 39 |
| 2019 | 16 |
| 2020 | 17 |
| 2021 | 16 |
| 2022 | 15 |
| 2023 | 7 |
| 2024 | 11 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process For Preparing A Carboxylic Acid
US-2016326084-A1 · Nov 10, 2016 · US
Process for preparing acrylic acid using an aluminum-free zeolitic material
US-9446390-B2 · Sep 20, 2016 · US
Process for preparing vinylidenecarboxylic acid (ester)s by reaction of formaldehyde with alkylcarboxylic acid (ester)s
US-9434673-B2 · Sep 6, 2016 · US
Method for catalytic conversion of ketoacids and hydrotreatment to hydrocarbons
US-2016221914-A1 · Aug 4, 2016 · US
Method for catalytic conversion of ketoacids via ketoacid dimer intermediate and hydrotreatment to hydrocarbons
US-2016221912-A1 · Aug 4, 2016 · US
Production of methacrylic acid
US-9394222-B2 · Jul 19, 2016 · US
Process for the preparation of 4-methylpent-3-en-1-ol derivatives
US-9381507-B2 · Jul 5, 2016 · US
Process for preparing acrylic acid
US-2016152541-A1 · Jun 2, 2016 · US
Continuous process of oxidative cleavage of vegetable oils
US-9346732-B2 · May 24, 2016 · US
Synthesis of intermediates for producing prostacyclin derivatives
US-2016107973-A1 · Apr 21, 2016 · US
Method of deuteration using mixed catalyst
US-9255070-B2 · Feb 9, 2016 · US
Process for producing pyridazinone compound and production intermediates thereof
US-2015376138-A1 · Dec 31, 2015 · US
Synthesis of a branched unsaturated compound by means of cross metathesis
US-2015376108-A1 · Dec 31, 2015 · US
Acid catalyzed oligomerization of alkyl esters and carboxylic acids
US-2015368180-A1 · Dec 24, 2015 · US
Process for the preparation of 4-methylpent-3-en-1-ol derivatives
US-2015353463-A1 · Dec 10, 2015 · US
Production of methacrylic acid
US-2015353462-A1 · Dec 10, 2015 · US
Process for preparing acrylic acid using an aluminum-free zeolitic material
US-2015343431-A1 · Dec 3, 2015 · US
Process for preparing acrylic acid using an alkali metal-free and alkaline earth metal-free zeolitic material
US-2015344394-A1 · Dec 3, 2015 · US
Methods Of Making Fused Ring Compounds
US-2015336922-A1 · Nov 26, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C51/353?
- CPC C07C51/353 is the Cooperative Patent Classification code for “by isomerisation; by change of size of the carbon skeleton.”
- How many patents are filed under CPC C07C51/353 (by isomerisation; by change of size of the carbon skeleton)?
- Our database includes 245 publications tagged with this CPC code.
- Is patent activity under CPC C07C51/353 growing?
- Publication counts under this code: 11 in 2024 vs 5 in 2025 (latest complete years).