Process for preparing beta-lactones
US-2026055071-A1 · Feb 26, 2026 · US
Compounds containing oxirane rings
Compounds containing oxirane rings · 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 | C07D303/02 |
| Official title | Compounds containing oxirane rings |
| Display label | Compounds containing oxirane rings |
| Total patents | 34 |
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 | 5 |
| 2016 | 6 |
| 2017 | 3 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 8 |
| 2021 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Product of glycidyl ether of a mono or polyhydric phenol
US-10961208-B1 · Mar 30, 2021 · US
Graphene fiber for aerospace composites
US-10875986-B2 · Dec 29, 2020 · US
Biomass-based epoxy resin and preparation method thereof
US-10745515-B2 · Aug 18, 2020 · US
Process for manufacturing a purified aqueous hydrogen peroxide solution
US-10647576-B2 · May 12, 2020 · US
Process for reducing propylene chlorohydrin in hydroxypropylated products
US-10626192-B2 · Apr 21, 2020 · US
Biomass-based epoxy resin and preparation method thereof
US-2020062888-A1 · Feb 27, 2020 · US
Beta-mercaptoethanol synthesis
US-10544094-B2 · Jan 28, 2020 · US
Process for purifying propylene oxide
US-10544116-B2 · Jan 28, 2020 · US
Composite for neutral layer
US-10532546-B2 · Jan 14, 2020 · US
A process for purifying propylene oxide
US-2019210989-A1 · Jul 11, 2019 · US
Flame-retardant aconitic acid-derived monomers
US-10301406-B2 · May 28, 2019 · US
Method for the epoxidation of an olefin with hydrogen peroxide
US-10196370-B2 · Feb 5, 2019 · US
Process for manufacturing a purified aqueous hydrogen peroxide solution
US-2018370798-A1 · Dec 27, 2018 · US
Flame-retardant aconitic acid-derived monomers
US-2018346619-A1 · Dec 6, 2018 · US
Process for reducing propylene chlorohydrin in hydroxypropylated products
US-2018319902-A1 · Nov 8, 2018 · US
Process for manufacturing a purified aqueous hydrogen peroxide solution
US-10099924-B2 · Oct 16, 2018 · US
Liquid-crystal urethane compound, thermally responsive liquid-crystal polyurethane elastomer, and production method therefor
US-2018171233-A1 · Jun 21, 2018 · US
Composite for neutral layer
US-2018170023-A1 · Jun 21, 2018 · US
Method for the epoxidation of an olefin with hydrogen peroxide
US-2018030012-A1 · Feb 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D303/02?
- CPC C07D303/02 is the Cooperative Patent Classification code for “Compounds containing oxirane rings.”
- How many patents are filed under CPC C07D303/02 (Compounds containing oxirane rings)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C07D303/02 growing?
- Publication counts under this code: 8 in 2020 vs 1 in 2021 (latest complete years).