A process for the elimination of volatile organic compounds and hazardous air pollutants in ammonia plants
US-2017320728-A1 · Nov 9, 2017 · US
Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025)
Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025) · 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 | C01C1/04 |
| Official title | Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025) |
| Display label | Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025) |
| Total patents | 268 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 25 |
| 2017 | 21 |
| 2018 | 20 |
| 2019 | 28 |
| 2020 | 31 |
| 2021 | 20 |
| 2022 | 17 |
| 2023 | 22 |
| 2024 | 31 |
| 2025 | 31 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Integrated power generation and chemical production using fuel cells
US-9786939-B2 · Oct 10, 2017 · US
Method for removing nitrogen oxides from combustion fumes with on-site generation of ammonia
US-2017284667-A1 · Oct 5, 2017 · US
Process for production of ammonia and derivatives, in particular urea
US-2017283371-A1 · Oct 5, 2017 · US
A method for revamping an ammonia plant
US-2017260060-A1 · Sep 14, 2017 · US
Reforming device and reforming method, and device for manufacturing chemical products equipped with reforming device and method for manufacturing chemical products
US-9737868-B2 · Aug 22, 2017 · US
Methods and systems for producing ammonia
US-2017210632-A1 · Jul 27, 2017 · US
Integration of Molten Carbonate Fuel Cells in Iron and Steel Processing
US-2017191139-A1 · Jul 6, 2017 · US
Vent line for use in ammonia and hydrogen plants
US-9695058-B2 · Jul 4, 2017 · US
System and method for supplying an energy grid with energy from an intermittent renewable energy source
US-2017145915-A1 · May 25, 2017 · US
Dihydrogen Production Process
US-2017144884-A1 · May 25, 2017 · US
Integration of molten carbonate fuel cells in fischer-tropsch synthesis
US-9650246-B2 · May 16, 2017 · US
Integration of molten carbonate fuel cells in Fischer-Tropsch synthesis
US-9647284-B2 · May 9, 2017 · US
Methods and systems for making ammonia in a double ammonia converter system
US-9643856-B2 · May 9, 2017 · US
System and method for load balancing of intermittent renewable energy for an electricity grid
US-2017122129-A1 · May 4, 2017 · US
Reforming device and method for manufacturing chemical products
US-2017096333-A1 · Apr 6, 2017 · US
Methods and systems for producing and processing syngas in a pressure swing adsorption unit and making ammonia therefrom
US-9561968-B2 · Feb 7, 2017 · US
Method for revamping a front-end of an ammonia plant
US-2017029282-A1 · Feb 2, 2017 · US
Integration of molten carbonate fuel cells with fermentation processes
US-9520607-B2 · Dec 13, 2016 · US
Integrated electrical power and chemical production using fuel cells
US-2016351931-A1 · Dec 1, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01C1/04?
- CPC C01C1/04 is the Cooperative Patent Classification code for “Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025).”
- How many patents are filed under CPC C01C1/04 (Preparation of ammonia by synthesis (preparation or purification of gas mixtures for ammonia synthesis C01B3/025))?
- Our database includes 268 publications tagged with this CPC code.
- Is patent activity under CPC C01C1/04 growing?
- Publication counts under this code: 31 in 2024 vs 31 in 2025 (latest complete years).