Heat augmentation features in a cast heat exchanger
US-12510308-B2 · Dec 30, 2025 · US
the element being built-up from finned sections
the element being built-up from finned sections · 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 | F28F1/28 |
| Official title | the element being built-up from finned sections |
| Display label | the element being built-up from finned sections |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 10 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cast plate heat exchanger and method of making using directional solidification
US-12480721-B2 · Nov 25, 2025 · US
Heat exchanger and air conditioning system
US-2025264279-A1 · Aug 21, 2025 · US
Processing method of heat exchanger and heat exchanger
US-12313354-B2 · May 27, 2025 · US
Cover fin and heat exchanger unit including the same
US-12298087-B2 · May 13, 2025 · US
3D heat exchanger heat transfer enhancement device
US-12163541-B2 · Dec 10, 2024 · US
Heat exchanger
US-2024280327-A1 · Aug 22, 2024 · US
Cover fin and heat exchanger unit including the same
US-2024219128-A1 · Jul 4, 2024 · US
Cast plate heat exchanger and method of making using directional solidification
US-2024060728-A1 · Feb 22, 2024 · US
3d heat exchanger heat transfer enhancement device
US-2024018981-A1 · Jan 18, 2024 · US
Heat exchange pipe, heat exchanger and water heating apparatus
US-11867428-B2 · Jan 9, 2024 · US
Finned tube heat exchangers and methods for manufacturing same
US-11835306-B2 · Dec 5, 2023 · US
Cast plate heat exchanger and method of making using directional solidification
US-11808529-B2 · Nov 7, 2023 · US
Heat exchanger and heat pump apparatus
US-11740026-B2 · Aug 29, 2023 · US
Heat exchanger and method thereof processing the same
US-2023138311-A1 · May 4, 2023 · US
Processing method of heat exchanger and heat exchanger
US-2023134273-A1 · May 4, 2023 · US
3d heat exchanger heat transfer enchancement device
US-2022316503-A1 · Oct 6, 2022 · US
Finned tube heat exchangers and methods for manufacturing same
US-2022282936-A1 · Sep 8, 2022 · US
Heat exchanger and heat pump apparatus
US-2022120504-A1 · Apr 21, 2022 · US
Defrosting device and refrigerator having the same
US-11226150-B2 · Jan 18, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F1/28?
- CPC F28F1/28 is the Cooperative Patent Classification code for “the element being built-up from finned sections.”
- How many patents are filed under CPC F28F1/28 (the element being built-up from finned sections)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC F28F1/28 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).