Component with differing material properties
US-2018327920-A1 · Nov 15, 2018 · US
with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips · 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 | F28F3/027 |
| Official title | {with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips} |
| Display label | with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips |
| Total patents | 294 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 15 |
| 2017 | 19 |
| 2018 | 31 |
| 2019 | 41 |
| 2020 | 29 |
| 2021 | 27 |
| 2022 | 29 |
| 2023 | 20 |
| 2024 | 30 |
| 2025 | 27 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fin for heat exchanger
US-10094624-B2 · Oct 9, 2018 · US
Paired oil cooler and aftercooler fluid flow arrangement
US-2018252218-A1 · Sep 6, 2018 · US
Heat exchanger, heat exchange method using heat exchanger, heat transport system using heat exchanger, and heat transport method using heat transport system
US-2018245863-A1 · Aug 30, 2018 · US
Heat exchanger having bypass seal with retention clip
US-2018128555-A1 · May 10, 2018 · US
Bar and plate air-oil heat exchanger
US-2018120034-A1 · May 3, 2018 · US
Heat Exchangers Having High Durability
US-2018094859-A1 · Apr 5, 2018 · US
Evaporator
US-9927160-B2 · Mar 27, 2018 · US
Flexible Heat Sink Thermoelective Device
US-2018017334-A1 · Jan 18, 2018 · US
Fin element for a heat exchanger
US-2017356697-A1 · Dec 14, 2017 · US
Heat exchanger
US-2017343302-A1 · Nov 30, 2017 · US
Heat recovery system having a plate heat exchanger
US-9823025-B2 · Nov 21, 2017 · US
Panel for heat exchange and improved noise reduction for a turbomachine
US-2017292795-A1 · Oct 12, 2017 · US
Heat exchanger coil with offset fins
US-2017284749-A1 · Oct 5, 2017 · US
Output director vane for an aircraft turbine engine, with an improved lubricant cooling function using a heat conduction matrix housed in an inner duct of the vane
US-2017284417-A1 · Oct 5, 2017 · US
Heat transfer plate and plate heat exchanger
US-2017254596-A1 · Sep 7, 2017 · US
Bimetallic fin with themo-adjusting turbulation feature
US-2017211897-A1 · Jul 27, 2017 · US
Fin for heat exchanger
US-2017198983-A1 · Jul 13, 2017 · US
Heat Exchanger Construction
US-2017198975-A1 · Jul 13, 2017 · US
Oil cooler with inner fin
US-9689628-B2 · Jun 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F3/027?
- CPC F28F3/027 is the Cooperative Patent Classification code for “with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips.”
- How many patents are filed under CPC F28F3/027 (with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips)?
- Our database includes 294 publications tagged with this CPC code.
- Is patent activity under CPC F28F3/027 growing?
- Publication counts under this code: 30 in 2024 vs 27 in 2025 (latest complete years).