Ammonia synthesis system and its operation method
US-2025256974-A1 · Aug 14, 2025 · US
Purge gas treatment, e.g. for removal of inert gases or recovery of H2
Purge gas treatment, e.g. for removal of inert gases or recovery of H2 · 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 | C01C1/0476 |
| Official title | {Purge gas treatment, e.g. for removal of inert gases or recovery of H2} |
| Display label | Purge gas treatment, e.g. for removal of inert gases or recovery of H2 |
| Total patents | 26 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 6 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Purge gas conditioning of nh3 plants
US-2025256975-A1 · Aug 14, 2025 · US
Production system and method of production for organic compound or microorganism
US-12241103-B2 · Mar 4, 2025 · US
System for recovering inert gases from an ammonia synthesis loop and method thereof
US-2024317595-A1 · Sep 26, 2024 · US
Process for ammonia synthesis using green hydrogen
US-2024158247-A1 · May 16, 2024 · US
Apparatus and method for ammonia wastewater reduction
US-2024109783-A1 · Apr 4, 2024 · US
Process for the synthesis of ammonia
US-11261099-B2 · Mar 1, 2022 · US
System and method to synthesize ammonia
US-10974970-B2 · Apr 13, 2021 · US
Production System and Method of Production for Organic Compound or Microorganism
US-2020407762-A1 · Dec 31, 2020 · US
Production system and method of production for organic compound or microorganism
US-10808267-B2 · Oct 20, 2020 · US
Process for the ammonia production
US-10647587-B2 · May 12, 2020 · US
Plant and process for ammonia production with cryogenic purification, and related method of revamping
US-10514203-B2 · Dec 24, 2019 · US
Process for the ammonia production
US-2019367379-A1 · Dec 5, 2019 · US
Process for the synthesis of ammonia
US-2019359494-A1 · Nov 28, 2019 · US
A process for production of ammonia from inert-free synthesis gas in multiple reaction systems
US-2018370810-A1 · Dec 27, 2018 · US
Plant and process for ammonia production with cryogenic purification, and related method of revamping
US-2018266758-A1 · Sep 20, 2018 · US
Hydrogen and nitrogen recovery from ammonia purge gas
US-10040691-B2 · Aug 7, 2018 · US
System and method to synthesize ammonia
US-2018208475-A1 · Jul 26, 2018 · US
Process and plant for recovering argon in a unit for separating an ammonia synthesis purge gas
US-2018094854-A1 · Apr 5, 2018 · US
Process for the ammonia production
US-2018044192-A1 · Feb 15, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01C1/0476?
- CPC C01C1/0476 is the Cooperative Patent Classification code for “Purge gas treatment, e.g. for removal of inert gases or recovery of H2.”
- How many patents are filed under CPC C01C1/0476 (Purge gas treatment, e.g. for removal of inert gases or recovery of H2)?
- Our database includes 26 publications tagged with this CPC code.
- Is patent activity under CPC C01C1/0476 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).