Additive manufactured return bend for fire tube or furnace tube
US-2025230890-A1 · Jul 17, 2025 · US
Particular methods for manufacturing outside or inside fins
Particular methods for manufacturing outside or inside fins · 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 | F28F2001/428 |
| Official title | {Particular methods for manufacturing outside or inside fins} |
| Display label | Particular methods for manufacturing outside or inside fins |
| Total patents | 39 |
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 | 5 |
| 2016 | 3 |
| 2017 | 2 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 5 |
| 2024 | 6 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger with heat transfer augmentation features
US-12281860-B2 · Apr 22, 2025 · US
Turbulator insert
US-2024280324-A1 · Aug 22, 2024 · US
Heat exchanger with heat transfer augmentation features
US-2024255234-A1 · Aug 1, 2024 · US
Heat exchanger with heat transfer augmentation features
US-11982499-B2 · May 14, 2024 · US
Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube
US-11920875-B2 · Mar 5, 2024 · US
Heat exchanger with heat transfer augmentation features
US-2024044588-A1 · Feb 8, 2024 · US
Heat exchanger with heat transfer augmentation features
US-2024044587-A1 · Feb 8, 2024 · US
Header arrangement for additively manufactured heat exchanger
US-11460252-B2 · Oct 4, 2022 · US
Monobloc assembly for a device which can carry out transfer of heat
US-2022184522-A1 · Jun 16, 2022 · US
Heat Transfer Tube
US-2022146214-A1 · May 12, 2022 · US
Heat exchanger riblet and turbulator features for improved manufacturability and performance
US-11306979-B2 · Apr 19, 2022 · US
Heat exchanger and air conditioner having the same
US-11274834-B2 · Mar 15, 2022 · US
Heat exchanger
US-2021389057-A1 · Dec 16, 2021 · US
Header arrangement for additively manufactured heat exchanger
US-2021231376-A1 · Jul 29, 2021 · US
Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube
US-2021172686-A1 · Jun 10, 2021 · US
Heat Exchange Tube, Heat Exchange Tube Manufacturing Method, and Heat Exchanger
US-2021123690-A1 · Apr 29, 2021 · US
Heat transfer tube and method for manufacturing a heat transfer tube
US-10981080-B2 · Apr 20, 2021 · US
Heat transfer tube and method for manufacturing a heat transfer tube
US-10933342-B2 · Mar 2, 2021 · US
Heat transfer tube and method for manufacturing a heat transfer tube
US-10926189-B2 · Feb 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F2001/428?
- CPC F28F2001/428 is the Cooperative Patent Classification code for “Particular methods for manufacturing outside or inside fins.”
- How many patents are filed under CPC F28F2001/428 (Particular methods for manufacturing outside or inside fins)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC F28F2001/428 growing?
- Publication counts under this code: 6 in 2024 vs 2 in 2025 (latest complete years).