Fluidized bed reactor, heat removal water pipe and application thereof in acrylonitrile production
US-12485397-B2 · Dec 2, 2025 · US
by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic 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 | C07C253/18 |
| Official title | by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings |
| Display label | by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings |
| Total patents | 40 |
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 | 3 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyurea compositions from polyaspartic esters and 2-substituted butanedioic acid esters
US-2024376343-A1 · Nov 14, 2024 · US
Heat removal tube set, method for controlling reaction temperature and method for producing unsaturated nitrile
US-2024181418-A1 · Jun 6, 2024 · US
Heat removal tube set, method for increasing reaction load, and method for producing unsaturated nitrile
US-2024182405-A1 · Jun 6, 2024 · US
Heat removal tube set and application thereof in temperature control of fluidized bed reactor and production of unsaturated nitrile
US-2024181417-A1 · Jun 6, 2024 · US
Catalyst, method for producing catalyst, and method for producing acrylonitrile
US-11772080-B2 · Oct 3, 2023 · US
Processes and systems for using silica particles in fluid bed reactor
US-11680038-B2 · Jun 20, 2023 · US
Process to treat metal or mineral ores and collector composition therefor
US-11548012-B2 · Jan 10, 2023 · US
Fluidized Bed Reactor, Heat Removal Water Pipe and Application Thereof in Acrylonitrile Production
US-2022410107-A1 · Dec 29, 2022 · US
Catalyst, method for producing catalyst, and method for producing acrylonitrile
US-2022168711-A1 · Jun 2, 2022 · US
Catalyst, method for producing catalyst, and method for producing acrylonitrile
US-2022153689-A1 · May 19, 2022 · US
Process for the synthesis of nitriles
US-11319284-B2 · May 3, 2022 · US
Catalyst, method for producing catalyst, and method for producing acrylonitrile
US-2021322959-A1 · Oct 21, 2021 · US
Processes and systems for using silica particles in fluid bed reactor
US-2021300862-A1 · Sep 30, 2021 · US
Preheating process and start-up process for the ammoxidation reaction
US-11091407-B2 · Aug 17, 2021 · US
Processes and systems for using silica particles in fluid bed reactor
US-11059774-B2 · Jul 13, 2021 · US
Process to treat metal or mineral ores and collector composition therefor
US-2021197210-A1 · Jul 1, 2021 · US
Catalyst, method for producing catalyst, and method for producing acrylonitrile
US-10940463-B2 · Mar 9, 2021 · US
Process and catalysts for the oxidation and/or ammoxidation of olefin
US-2020254429-A1 · Aug 13, 2020 · US
Conversion of a perfluorinated vinyl ether into a partially fluorinated saturated ether derivative
US-10723683-B2 · Jul 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C253/18?
- CPC C07C253/18 is the Cooperative Patent Classification code for “by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings.”
- How many patents are filed under CPC C07C253/18 (by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C07C253/18 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).