Processes for stabilizing antimony catalysts
US-2022143583-A1 · May 12, 2022 · US
by ammoxidation of hydrocarbons or substituted hydrocarbons
by ammoxidation of hydrocarbons or substituted hydrocarbons · 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 | C07C253/24 |
| Official title | by ammoxidation of hydrocarbons or substituted hydrocarbons |
| Display label | by ammoxidation of hydrocarbons or substituted hydrocarbons |
| Total patents | 79 |
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 | 7 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 11 |
| 2020 | 8 |
| 2021 | 10 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst
US-2022023837-A1 · Jan 27, 2022 · US
Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst
US-2022002233-A1 · Jan 6, 2022 · US
Method for producing oxide catalyst and method for producing unsaturated nitrile
US-2021339239-A1 · Nov 4, 2021 · US
Process for producing compound
US-11161806-B2 · Nov 2, 2021 · US
Method for producing oxide catalyst and method for producing unsaturated nitrile
US-11141722-B2 · Oct 12, 2021 · US
Processes and systems for using silica particles in fluid bed reactor
US-2021300862-A1 · Sep 30, 2021 · US
Ammoxidation reactor control
US-11078156-B2 · Aug 3, 2021 · US
Oxide catalyst and method for producing unsaturated nitrile
US-2021229077-A1 · Jul 29, 2021 · US
Process for producing unsaturated nitrile
US-2021230102-A1 · Jul 29, 2021 · US
Processes and systems for using silica particles in fluid bed reactor
US-11059774-B2 · Jul 13, 2021 · US
Catalyst compositions and process for direct production of hydrogen cyanide in an acrylonitrile reactor feed stream
US-2021146339-A1 · May 20, 2021 · US
Process for producing unsaturated nitrile
US-10894762-B2 · Jan 19, 2021 · US
Method for producing catalyst, and method for producing unsaturated nitrile
US-10807073-B2 · Oct 20, 2020 · US
Method for producing oxide catalyst and method for producing unsaturated nitrile
US-10792643-B2 · Oct 6, 2020 · US
Processes for stabilizing antimony catalysts
US-2020269218-A1 · Aug 27, 2020 · US
Process and catalysts for the oxidation and/or ammoxidation of olefin
US-2020254429-A1 · Aug 13, 2020 · US
Process for producing compound
US-2020165196-A1 · May 28, 2020 · US
Process for producing unsaturated nitrile
US-10640458-B2 · May 5, 2020 · US
Process for producing unsaturated nitrile
US-2020087251-A1 · Mar 19, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C253/24?
- CPC C07C253/24 is the Cooperative Patent Classification code for “by ammoxidation of hydrocarbons or substituted hydrocarbons.”
- How many patents are filed under CPC C07C253/24 (by ammoxidation of hydrocarbons or substituted hydrocarbons)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC C07C253/24 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).