Fin assembling method
US-12560391-B2 · Feb 24, 2026 · US
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Louvered fins
Louvered fins · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B21D53/025 |
| Official title | {Louvered fins} |
| Display label | Louvered fins |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fin assembling method
US-2025012519-A1 · Jan 9, 2025 · US
Apparatus for manufacturing fin and method for manufacturing fin
US-11541446-B2 · Jan 3, 2023 · US
Device for manufacturing fins and method for manufacturing fins
US-11400510-B2 · Aug 2, 2022 · US
Tube for a heat exchanger, and method of making the same
US-11340027-B2 · May 24, 2022 · US
Air fin for a heat exchanger
US-11162742-B2 · Nov 2, 2021 · US
Apparatus for manufacturing fin and method for manufacturing fin
US-2021069771-A1 · Mar 11, 2021 · US
Tube for a heat exchanger, and method of making the same
US-2021018276-A1 · Jan 21, 2021 · US
Device for manufacturing fins and method for manufacturing fins
US-2020353532-A1 · Nov 12, 2020 · US
Air fin for a heat exchanger
US-2020011614-A1 · Jan 9, 2020 · US
Air fin for a heat exchanger, and method of making the same
US-10436156-B2 · Oct 8, 2019 · US
Heat exchanger with improved fins
US-2018304342-A1 · Oct 25, 2018 · US
Air Fin for a Heat Exchanger, and Method of Making the Same
US-2018156169-A1 · Jun 7, 2018 · US
Manufacturing method of heat exchanger and refrigeration cycle apparatus
US-2016082555-A1 · Mar 24, 2016 · US