Process integration for natural gas liquid recovery
US-2019186828-A1 · Jun 20, 2019 · US
Refinery or petrochemical off-gas
Refinery or petrochemical off-gas · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F25J2210/12 |
| Official title | Refinery or petrochemical off-gas |
| Display label | Refinery or petrochemical off-gas |
| Total patents | 183 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 18 |
| 2017 | 12 |
| 2018 | 18 |
| 2019 | 32 |
| 2020 | 20 |
| 2021 | 26 |
| 2022 | 22 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for liquefaction of industrial gas by integration of methanol plant and air separation unit
US-10281203-B2 · May 7, 2019 · US
Methods for recovering nitrogen from process gas streams
US-2018328659-A1 · Nov 15, 2018 · US
Methods for producing pressurized alkene gas
US-2018328657-A1 · Nov 15, 2018 · US
Methods for recovering alkenes and nitrogen from process gas streams
US-2018328654-A1 · Nov 15, 2018 · US
Methods for producing pressurized alkene gas
US-2018328658-A1 · Nov 15, 2018 · US
Methods for recovering alkenes from process gas streams
US-2018328656-A1 · Nov 15, 2018 · US
Method for Separating Gases and Vapors in a Cascading Coolant Horizontal Spray Tower
US-2018320964-A1 · Nov 8, 2018 · US
Reactors and systems for oxidative coupling of methane
US-2018305274-A1 · Oct 25, 2018 · US
Cyrogenic separation of light olefins and methane from syngas
US-2018298292-A1 · Oct 18, 2018 · US
Cyrogenic separation of light olefins and methane from syngas
US-2018283775-A1 · Oct 4, 2018 · US
Method for Removing a Foulant from a Gas Stream without External Refrigeration
US-2018266762-A1 · Sep 20, 2018 · US
Efficient oxidative coupling of methane processes and systems
US-2018215682-A1 · Aug 2, 2018 · US
Method and system for obtaining hydrogen from a feed mixture which contains hydrogen and hydrocarbons
US-2018186632-A1 · Jul 5, 2018 · US
Process for the production of dilute ethylene
US-2018073803-A1 · Mar 15, 2018 · US
Method of cooling using extended binary refrigeration system
US-9909804-B2 · Mar 6, 2018 · US
Method for liquefaction of industrial gas by integration of methanol plant and air separation unit
US-2018038644-A1 · Feb 8, 2018 · US
Integration of industrial gas site with liquid hydrogen production
US-2018038638-A1 · Feb 8, 2018 · US
Process integration of a gas processing unit with liquefaction unit
US-2018038642-A1 · Feb 8, 2018 · US
Method for liquefaction of industrial gas by integration of methanol plant and air separation unit
US-2018038641-A1 · Feb 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25J2210/12?
- CPC F25J2210/12 is the Cooperative Patent Classification code for “Refinery or petrochemical off-gas.”
- How many patents are filed under CPC F25J2210/12 (Refinery or petrochemical off-gas)?
- Our database includes 183 publications tagged with this CPC code.
- Is patent activity under CPC F25J2210/12 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).