Process for the preparation of bio-based olefins from primary alcohol
US-2026062361-A1 · Mar 5, 2026 · US
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with oxides of nitrogen or nitrogen-containing mineral acids
with oxides of nitrogen or nitrogen-containing mineral acids · 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 | C07C51/27 |
| Official title | with oxides of nitrogen or nitrogen-containing mineral acids |
| Display label | with oxides of nitrogen or nitrogen-containing mineral acids |
| Total patents | 23 |
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 | 2 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of preparing glucaric acid from glucose using nitroxide radical-mediated organocatalyst and method of separating glucaric acid
US-2025042832-A1 · Feb 6, 2025 · US
Synthesis of ras inhibitors
US-2024368190-A1 · Nov 7, 2024 · US
Method for producing dicarboxylic acid
US-11999688-B2 · Jun 4, 2024 · US
Method of oxidizing glycolaldehyde using nitric acid
US-11753362-B2 · Sep 12, 2023 · US
Polyrotaxane and production method therefor, and crosslinked polyrotaxane
US-2023067211-A1 · Mar 2, 2023 · US
A method of oxidizing glycolaldehyde using nitric acid
US-2022213018-A1 · Jul 7, 2022 · US
Metal-free catalytic oxidation system, an oxygenation method and a method for producing benzoic acid derivatives
US-11084013-B1 · Aug 10, 2021 · US
Preparation and separation of a di-carboxylic acid-containing mixture
US-11078149-B2 · Aug 3, 2021 · US
Method of removing nitrate compounds from adipic acid
US-11028037-B2 · Jun 8, 2021 · US
Method for producing dicarboxylic acid
US-2021147331-A1 · May 20, 2021 · US
Imaging agents and methods of use
US-10953113-B2 · Mar 23, 2021 · US
Method of removing nitrate compounds from adipic acid
US-2020317595-A1 · Oct 8, 2020 · US
Preparation and separation of a di-carboxylic acid-containing mixture
US-2020308092-A1 · Oct 1, 2020 · US
Method for producing lactic acid
US-2020283918-A1 · Sep 10, 2020 · US
Preparation and separation of a di-carboxylic acid-containing mixture
US-10654787-B2 · May 19, 2020 · US
Imaging agents and methods of use
US-2020078477-A1 · Mar 12, 2020 · US
Aromatic compounds from furanics
US-10562875-B2 · Feb 18, 2020 · US
Aromatic compounds from furanics
US-2019023678-A1 · Jan 24, 2019 · US
Method of catalytic oxidation of lignite using oxygen as oxidant at atmospheric pressure
US-10160712-B2 · Dec 25, 2018 · US