Plant and process for ammonia production with cryogenic purification, and related method of revamping
US-10514203-B2 · Dec 24, 2019 · US
at low temperatures
at low temperatures · 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 | C01B3/506 |
| Official title | at low temperatures |
| Display label | at low temperatures |
| Total patents | 227 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 13 |
| 2017 | 9 |
| 2018 | 20 |
| 2019 | 20 |
| 2020 | 17 |
| 2021 | 18 |
| 2022 | 21 |
| 2023 | 31 |
| 2024 | 29 |
| 2025 | 30 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process and apparatus for the production of CO and CO2
US-10302357-B2 · May 28, 2019 · US
Method for separating a synthesis gas
US-2019154332-A1 · May 23, 2019 · US
Production of ammonia make-up syngas with cryogenic purification
US-10273155-B2 · Apr 30, 2019 · US
Offgas stream direct contact condenser
US-10252957-B2 · Apr 9, 2019 · US
Novel production equipment and production method of liquefied hydrogen and liquefied natural gas
US-2019063824-A1 · Feb 28, 2019 · US
Gaseous hydrogen storage system with cryogenic supply
US-2018346313-A1 · Dec 6, 2018 · US
Purification of a gas stream
US-10130906-B2 · Nov 20, 2018 · US
Method and apparatus for separating a synthesis gas
US-2018320959-A1 · Nov 8, 2018 · US
Hydrogen purification device and hydrogen purification system using hydrogen purification device
US-10105641-B2 · Oct 23, 2018 · US
Cyrogenic separation of light olefins and methane from syngas
US-2018298292-A1 · Oct 18, 2018 · US
Process for the treatment of a hydrocarbon feed comprising hydrogen and C1 to C4 hydrocarbons
US-10100260-B2 · Oct 16, 2018 · US
Cyrogenic separation of light olefins and methane from syngas
US-2018283775-A1 · Oct 4, 2018 · US
Process for producing ammonia synthesis gas
US-10087074-B2 · Oct 2, 2018 · US
System and method for cryogenic purification of a feed stream comprising hydrogen, methane, nitrogen and argon
US-10088229-B2 · Oct 2, 2018 · US
Plant and process for ammonia production with cryogenic purification, and related method of revamping
US-2018266758-A1 · Sep 20, 2018 · US
Process and plant for separating a gas mixture
US-10066870-B2 · Sep 4, 2018 · US
Hydrogen and nitrogen recovery from ammonia purge gas
US-10040691-B2 · Aug 7, 2018 · US
System and method for cryogenic purification of a feed stream comprising hydrogen, methane, nitrogen and argon
US-10024595-B2 · Jul 17, 2018 · US
Method and system for obtaining hydrogen from a feed mixture which contains hydrogen and hydrocarbons
US-2018186632-A1 · Jul 5, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B3/506?
- CPC C01B3/506 is the Cooperative Patent Classification code for “at low temperatures.”
- How many patents are filed under CPC C01B3/506 (at low temperatures)?
- Our database includes 227 publications tagged with this CPC code.
- Is patent activity under CPC C01B3/506 growing?
- Publication counts under this code: 29 in 2024 vs 30 in 2025 (latest complete years).