Ammonia plant synthesis gas compressor train
US-11788546-B2 · Oct 17, 2023 · US
Preparation, {purification} or separation of ammonia
Preparation, {purification} or separation of ammonia · 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 | C01C1/02 |
| Official title | Preparation, {purification} or separation of ammonia |
| Display label | Preparation, {purification} or separation of ammonia |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 11 |
| 2022 | 14 |
| 2023 | 4 |
| 2024 | 12 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Small modular nuclear reactor integrated energy systems for energy production and green industrial applications
US-2023287583-A1 · Sep 14, 2023 · US
Method for producing cellulose carbamate
US-11584804-B2 · Feb 21, 2023 · US
Method for producing cellulose carbamate
US-2023022830-A1 · Jan 26, 2023 · US
Conversion of ammonium nitrate into useful products
US-11518685-B2 · Dec 6, 2022 · US
Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor
US-2022362748-A1 · Nov 17, 2022 · US
Methods and systems for removing ammonia from a gas mixture
US-11491435-B2 · Nov 8, 2022 · US
Carbonaceous material for negative electrode active material for non-aqueous electrolyte secondary batteries, non-aqueous electrolyte secondary battery negative electrode, non-aqueous electrolyte secondary battery, and production method of carbonaceous material
US-11492260-B2 · Nov 8, 2022 · US
Exhaust gas treatment system
US-11473471-B2 · Oct 18, 2022 · US
Nitrate process for manufacturing transition metal hydroxide precursors
US-11401167-B2 · Aug 2, 2022 · US
Process for producing carbon fiber materials for separating co2 or nh3 from gas mixtures, carbon fiber materials and its use
US-2022220639-A1 · Jul 14, 2022 · US
Photocatalyst
US-2022161247-A1 · May 26, 2022 · US
Use of renewable energy in olefin synthesis
US-2022127209-A1 · Apr 28, 2022 · US
Use of renewable energy in the production of chemicals
US-2022126251-A1 · Apr 28, 2022 · US
Use of renewable energy in methanol synthesis
US-2022119328-A1 · Apr 21, 2022 · US
Use of intermittent energy in the production of chemicals
US-2022119252-A1 · Apr 21, 2022 · US
Use of renewable energy in ammonia synthesis
US-2022119269-A1 · Apr 21, 2022 · US
Modular system for hydrogen and ammonia generation without direct water input from central source
US-2022033984-A1 · Feb 3, 2022 · US
Ammonia manufacturing apparatus and ammonia manufacturing method
US-2021395902-A1 · Dec 23, 2021 · US
Development of ruthenium-copper nano-sponge electrodes for ambient electrochemical reduction of nitrogen to ammonia
US-2021340683-A1 · Nov 4, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01C1/02?
- CPC C01C1/02 is the Cooperative Patent Classification code for “Preparation, {purification} or separation of ammonia.”
- How many patents are filed under CPC C01C1/02 (Preparation, {purification} or separation of ammonia)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC C01C1/02 growing?
- Publication counts under this code: 12 in 2024 vs 11 in 2025 (latest complete years).