Clad sheets for heat exchangers
US-2017368596-A1 · Dec 28, 2017 · US
of metal
of metal · 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 | F28F21/08 |
| Official title | of metal |
| Display label | of metal |
| Total patents | 369 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 22 |
| 2016 | 20 |
| 2017 | 37 |
| 2018 | 41 |
| 2019 | 47 |
| 2020 | 48 |
| 2021 | 42 |
| 2022 | 33 |
| 2023 | 30 |
| 2024 | 22 |
| 2025 | 19 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger and fabrication
US-2017336155-A1 · Nov 23, 2017 · US
Aluminum alloy cladding material for heat exchanger
US-2017321304-A1 · Nov 9, 2017 · US
Aluminum alloy cladding material for heat exchanger
US-2017321974-A1 · Nov 9, 2017 · US
Heat spreaders with integrated preforms
US-9799584-B2 · Oct 24, 2017 · US
Light weight housing for internal component with integrated thermal management features and method of making
US-2017292797-A1 · Oct 12, 2017 · US
Process for removing nitrous oxide from a gas stream
US-2017246590-A1 · Aug 31, 2017 · US
Clad material for cooler, cooler for heat-generating device, and method of producing cooler for heat-generating device
US-2017246840-A1 · Aug 31, 2017 · US
Heat exchanger and fabrication
US-9746257-B2 · Aug 29, 2017 · US
Heat receiving tile formed of carbon fiber composite material and method of manufacturing the same
US-2017167802-A1 · Jun 15, 2017 · US
Copper alloy tube for heat exchanger excellent in fracture strength
US-9671182-B2 · Jun 6, 2017 · US
Composite heat-dissipation substrate and manufacturing method of the same
US-9611415-B2 · Apr 4, 2017 · US
Plate heat exchanger
US-2017082376-A1 · Mar 23, 2017 · US
Evaporator with phase change material
US-9581369-B2 · Feb 28, 2017 · US
Thermal conductive sheet, method of producing thermal conductive sheet and heat releasing device
US-9574833-B2 · Feb 21, 2017 · US
Additive manufacturing of a complex product
US-2017049008-A1 · Feb 16, 2017 · US
Heat exchanger and fabrication
US-2017045313-A1 · Feb 16, 2017 · US
Flexible thermal conduit for an electronic device
US-9545030-B2 · Jan 10, 2017 · US
Three dimensional woven lattices as multi-functional heat exchanger
US-2016363389-A1 · Dec 15, 2016 · US
Evaporator having a phase change material louvered clam shell housing
US-9518768-B2 · Dec 13, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F21/08?
- CPC F28F21/08 is the Cooperative Patent Classification code for “of metal.”
- How many patents are filed under CPC F28F21/08 (of metal)?
- Our database includes 369 publications tagged with this CPC code.
- Is patent activity under CPC F28F21/08 growing?
- Publication counts under this code: 22 in 2024 vs 19 in 2025 (latest complete years).