Apparatus and process to provide cooling water for ammonia and or hydrogen productions
US-2024207802-A1 · Jun 27, 2024 · US
Ammonia
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 | C25B1/27 |
| Official title | Ammonia |
| Display label | Ammonia |
| Total patents | 182 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 12 |
| 2020 | 8 |
| 2021 | 18 |
| 2022 | 12 |
| 2023 | 30 |
| 2024 | 36 |
| 2025 | 37 |
| 2026 | 17 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Two-dimensional high-entropy transition metal dichalcogenides for carbon dioxide electrocatalysis
US-2022389600-A1 · Dec 8, 2022 · US
Method for ammonia recovery from contaminated water including solvay effluent and aqueous solutions
US-11453951-B1 · Sep 27, 2022 · US
A method for efficient electrocatalytic synthesis of pure liquid product solutions including h2o2, oxygenates, ammonia, and so on
US-2022259746-A1 · Aug 18, 2022 · US
Methods for producing ammonia and related systems
US-2022081786-A1 · Mar 17, 2022 · US
Ambient air separation and soec front-end for ammonia synthesis gas production
US-2022081785-A1 · Mar 17, 2022 · US
Methods for co-producing hydrocarbon products and ammonia
US-2022081371-A1 · Mar 17, 2022 · US
Method for preparing a catalytic material of an electrode for electrochemical reduction reactions prepared by electroreduction
US-2022018033-A1 · Jan 20, 2022 · US
Method for producing an active layer of an electrode for electrochemical reduction reactions
US-2022010439-A1 · Jan 13, 2022 · US
Method for synthesizing ammonia using metal nanoparticles in a fuel cell
US-2022002884-A1 · Jan 6, 2022 · US
Impedance monitoring of a modular electrolysis system
US-2021404078-A1 · Dec 30, 2021 · US
Ammonia manufacturing apparatus and ammonia manufacturing method
US-2021395902-A1 · Dec 23, 2021 · US
Process for electrochemical preparation of ammonia
US-2021388511-A1 · Dec 16, 2021 · US
Development of ruthenium-copper nano-sponge electrodes for ambient electrochemical reduction of nitrogen to ammonia
US-2021340683-A1 · Nov 4, 2021 · US
Electrochemical cell and process
US-11145871-B2 · Oct 12, 2021 · US
A Method for the Electrochemical Synthesis of Ammonia from Nitrates and Water
US-2021301408-A1 · Sep 30, 2021 · US
Cu1 81S CATALYST FOR SYNTHESIZING NH3 AND METHOD FOR SYNTHESIZING NH3 USING THE SAME
US-2021301412-A1 · Sep 30, 2021 · US
Metallic mesh-based gas diffusion electrodes for utilization of sparingly soluble gases in electrochemical reactions with nonaqueous electrolytes
US-2021301411-A1 · Sep 30, 2021 · US
Process that can withstand high currents, for producing ammonia
US-2021285113-A1 · Sep 16, 2021 · US
An electrolytic composition and cathode for the nitrogen reduction reaction
US-2021238756-A1 · Aug 5, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B1/27?
- CPC C25B1/27 is the Cooperative Patent Classification code for “Ammonia.”
- How many patents are filed under CPC C25B1/27 (Ammonia)?
- Our database includes 182 publications tagged with this CPC code.
- Is patent activity under CPC C25B1/27 growing?
- Publication counts under this code: 36 in 2024 vs 37 in 2025 (latest complete years).