Organic compounds
US-2025382252-A1 · Dec 18, 2025 · US
This page is not indexed by search engines while we improve data quality.
of a five-membered ring
of a five-membered ring · 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 | C07C49/395 |
| Official title | of a five-membered ring |
| Display label | of a five-membered ring |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 4 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Chemical liquid purification method and chemical liquid
US-12311294-B2 · May 27, 2025 · US
Bio-based methyl dihydrojasmonate, bio-based cyclopentanone, process for their preparation and use thereof
US-2024383839-A1 · Nov 21, 2024 · US
Catalyst for preparing 1,3-cyclopentanediol, method for preparing 1,3-cyclopentanediol by using same, and 1,3-cyclopentanediol prepared thereby
US-2024360059-A1 · Oct 31, 2024 · US
Chemical liquid purification method and chemical liquid
US-2024216843-A1 · Jul 4, 2024 · US
Chemical liquid purification method and chemical liquid
US-11958005-B2 · Apr 16, 2024 · US
Perfluorinated Allyl Ethers and Perfluorinated Allyl Amines and Methods of Making and Using the Same
US-2023357172-A1 · Nov 9, 2023 · US
Chemical liquid purification method and chemical liquid
US-2023087746-A1 · Mar 23, 2023 · US
Chemical liquid purification method and chemical liquid
US-11491428-B2 · Nov 8, 2022 · US
Oxocarbon-, pseudooxocarbon- and radialene compounds and their use
US-11342504-B2 · May 24, 2022 · US
Solvent for producing organic transistor
US-10693080-B2 · Jun 23, 2020 · US
Chemical liquid purification method and chemical liquid
US-2020164294-A1 · May 28, 2020 · US
Oxocarbon-, Pseudooxocarbon- and Radialene Compounds and Their Use
US-2020152873-A1 · May 14, 2020 · US
Oxocarbon-, pseudooxocarbon- and radialene compounds and their use
US-10586926-B2 · Mar 10, 2020 · US
Synthesis of hypervalent iodine reagents with dioxygen
US-10487099-B2 · Nov 26, 2019 · US
Oxocarbon-, Pseudooxocarbon- and Radialene Compounds and Their Use
US-2018076389-A1 · Mar 15, 2018 · US
Oxocarbon-, pseudooxocarbon- and radialene compounds and their use
US-9876172-B2 · Jan 23, 2018 · US
Cycloalkane oxidation catalysts and method to produce alcohols and ketones
US-9745239-B2 · Aug 29, 2017 · US
Preparation method of carboxylic acids or ketones using ozone, singlet state-oxygen atom or hydroxyl free radical
US-9637438-B2 · May 2, 2017 · US
Solvent for producing organic transistor
US-2016293849-A1 · Oct 6, 2016 · US