Heat integration for heating liquid and two-phase hydrocarbon streams
US-2026085883-A1 · Mar 26, 2026 · US
by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00})
by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00}) · 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 | F25J3/02 |
| Official title | by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00}) |
| Display label | by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00}) |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 7 |
| 2019 | 4 |
| 2020 | 3 |
| 2023 | 1 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus and process for pre-liquefaction fluid processing for improved liquefaction operations
US-12535267-B2 · Jan 27, 2026 · US
Process for purifying co2
US-2025377159-A1 · Dec 11, 2025 · US
Pumping of liquid cryogen from a storage tank
US-12405594-B2 · Sep 2, 2025 · US
Apparatus and Process for Pre-Liquefaction Fluid Processing for Improved Liquefaction Operations
US-2025060155-A1 · Feb 20, 2025 · US
Apparatus and Process for Pre-Liquefaction Fluid Processing for Improved Liquefaction Operations
US-2025060156-A1 · Feb 20, 2025 · US
Pumping of liquid cryogen from a storage tank
US-2023067726-A1 · Mar 2, 2023 · US
Distillation column system and plant for production of oxygen by cryogenic fractionation of air
US-10845118-B2 · Nov 24, 2020 · US
Process for increasing ethylene and propylene yield from a propylene plant
US-10808999-B2 · Oct 20, 2020 · US
Helium Extraction from Natural Gas
US-2020088465-A1 · Mar 19, 2020 · US
Method for removing nitrogen from a hydrocarbon-rich fraction
US-10508244-B2 · Dec 17, 2019 · US
Method and process for converting the ethylene present in the overhead effluent from a FCC in a manner such as to increase the propylene production
US-10435338-B2 · Oct 8, 2019 · US
Method of treating a hydrocarbon stream comprising methane, and an apparatus therefor
US-10215485-B2 · Feb 26, 2019 · US
Method and process for converting the ethylene present in the overhead effluent from a fcc in a manner such as to increase the propylene production
US-2019016648-A1 · Jan 17, 2019 · US
Method for denitrogenation of natural gas with or without helium recovery
US-10006699-B2 · Jun 26, 2018 · US
Cryogenic separation of synthesis gas
US-9909803-B2 · Mar 6, 2018 · US
Method of cooling using extended binary refrigeration system
US-9909804-B2 · Mar 6, 2018 · US
Method for removing nitrogen from a hydrocarbon-rich fraction
US-2018051215-A1 · Feb 22, 2018 · US
Method for enriching oxygen isotope
US-9895662-B2 · Feb 20, 2018 · US
Lubricant separator
US-2018038618-A1 · Feb 8, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F25J3/02?
- CPC F25J3/02 is the Cooperative Patent Classification code for “by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00}).”
- How many patents are filed under CPC F25J3/02 (by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J3/08 takes precedence {; purification of hydrocarbons in general C07C7/00}))?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC F25J3/02 growing?
- Publication counts under this code: 1 in 2023 vs 4 in 2025 (latest complete years).