Underlayer and methods for euv lithography
US-2024280905-A1 · Aug 22, 2024 · US
Preparation of oxiranes
Preparation of oxiranes · 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 | C07D301/00 |
| Official title | Preparation of oxiranes |
| Display label | Preparation of oxiranes |
| Total patents | 64 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 8 |
| 2017 | 12 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Flexible dry sprinkler having a differential pressure controller
US-2024252863-A1 · Aug 1, 2024 · US
Flexible dry sprinkler having a differential pressure controller
US-11998781-B2 · Jun 4, 2024 · US
Process for the preparation of ethylene glycol
US-11807594-B2 · Nov 7, 2023 · US
Flexible dry sprinkler having a differential pressure controller
US-2023330464-A1 · Oct 19, 2023 · US
Flexible dry sprinkler having a differential pressure controller
US-11730990-B2 · Aug 22, 2023 · US
Polymerizable absorbers of uv and high energy visible light
US-2023060974-A1 · Mar 2, 2023 · US
Bisphenol a derivative, preparation method therefor and use thereof in photolithography
US-2022373885-A1 · Nov 24, 2022 · US
Graphene compound and manufacturing method thereof, electrolyte, and power storage device
US-11495826-B2 · Nov 8, 2022 · US
Polymerizable absorbers of UV and high energy visible light
US-11493668-B2 · Nov 8, 2022 · US
Process for the preparation of ethylene glycol
US-2022024841-A1 · Jan 27, 2022 · US
Catalyst and method for manufacturing the same and method for hydrogenating aromatic epoxy compound
US-11167268-B2 · Nov 9, 2021 · US
Porous ceramic bodies including alumina mesocrystals
US-2021331139-A1 · Oct 28, 2021 · US
Flexible dry sprinkler having a differential pressure controller
US-2021290999-A1 · Sep 23, 2021 · US
Flexible dry sprinkler having a differential pressure controller
US-11083920-B2 · Aug 10, 2021 · US
Catalyst and Method for Manufacturing the Same and Method for Hydrogenating Aromatic Epoxy Compound
US-2021086167-A1 · Mar 25, 2021 · US
Process for producing organic compound
US-10781193-B2 · Sep 22, 2020 · US
Graphene compound and manufacturing method thereof, electrolyte, and power storage device
US-2020287239-A1 · Sep 10, 2020 · US
Graphene compound and manufacturing method thereof, electrolyte, and power storage device
US-10707524-B2 · Jul 7, 2020 · US
Polymerizable absorbers of uv and high energy visible light
US-2020095187-A1 · Mar 26, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D301/00?
- CPC C07D301/00 is the Cooperative Patent Classification code for “Preparation of oxiranes.”
- How many patents are filed under CPC C07D301/00 (Preparation of oxiranes)?
- Our database includes 64 publications tagged with this CPC code.
- Is patent activity under CPC C07D301/00 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).