Ammonia manufacturing apparatus and ammonia manufacturing method
US-12546018-B2 · Feb 10, 2026 · US
Separation of NH3 (during purge gas treatment C01C1/0476)
Separation of NH3 (during purge gas treatment C01C1/0476) · 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 | C01C1/0458 |
| Official title | {Separation of NH3 (during purge gas treatment C01C1/0476)} |
| Display label | Separation of NH3 (during purge gas treatment C01C1/0476) |
| Total patents | 45 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for producing methanol and ammonia
US-12528700-B2 · Jan 20, 2026 · US
Ammonia synthesis system and operation method thereof
US-2025223181-A1 · Jul 10, 2025 · US
Green ammonia absorption cooling
US-2025100892-A1 · Mar 27, 2025 · US
Production system and method of production for organic compound or microorganism
US-12241103-B2 · Mar 4, 2025 · US
Ammonia manufacturing apparatus and ammonia manufacturing method
US-2024110293-A1 · Apr 4, 2024 · US
Integrated apparatus for producing ammonia
US-11873227-B2 · Jan 16, 2024 · US
Ammonia separation method and zeolite
US-11833468-B2 · Dec 5, 2023 · US
Systems and methods of ammonia synthesis
US-2023203686-A1 · Jun 29, 2023 · US
Ammonia separation method and zeolite
US-11628395-B2 · Apr 18, 2023 · US
Systems and methods of ammonia synthesis
US-11603599-B2 · Mar 14, 2023 · US
Stable ammonia absorbents
US-11548789-B2 · Jan 10, 2023 · US
NaA ZEOLITE MEMBRANE FOR RECOVERY OF AMMONIA
US-2022387964-A1 · Dec 8, 2022 · US
Ammonia separation method and zeolite
US-2022288529-A1 · Sep 15, 2022 · US
Process For Producing Methanol And Ammonia
US-2022144654-A1 · May 12, 2022 · US
Process for producing methanol and ammonia
US-11261086-B2 · Mar 1, 2022 · US
Ammonia manufacturing apparatus and ammonia manufacturing method
US-2021395902-A1 · Dec 23, 2021 · US
Ammonia separation method and zeolite
US-2021138393-A1 · May 13, 2021 · US
System and method to synthesize ammonia
US-10974970-B2 · Apr 13, 2021 · US
Additive manufacturing of three-dimensional articles
US-10974448-B2 · Apr 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01C1/0458?
- CPC C01C1/0458 is the Cooperative Patent Classification code for “Separation of NH3 (during purge gas treatment C01C1/0476).”
- How many patents are filed under CPC C01C1/0458 (Separation of NH3 (during purge gas treatment C01C1/0476))?
- Our database includes 45 publications tagged with this CPC code.
- Is patent activity under CPC C01C1/0458 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).