Heating and cooling devices, systems and related method
US-10876773-B2 · Dec 29, 2020 · US
Hollow fins; fins with internal circuits
Hollow fins; fins with internal circuits · 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 | F28F2215/06 |
| Official title | Hollow fins; fins with internal circuits |
| Display label | Hollow fins; fins with internal circuits |
| Total patents | 141 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 8 |
| 2018 | 12 |
| 2019 | 19 |
| 2020 | 13 |
| 2021 | 22 |
| 2022 | 20 |
| 2023 | 13 |
| 2024 | 10 |
| 2025 | 12 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Wickless capillary driven constrained vapor bubble heat pipes
US-2020359531-A1 · Nov 12, 2020 · US
Heat sink with condensing fins and phase change material
US-2020340752-A1 · Oct 29, 2020 · US
Acoustic absorber with integrated heat sink
US-2020284529-A1 · Sep 10, 2020 · US
Acoustic absorber for fan noise reduction
US-2020284174-A1 · Sep 10, 2020 · US
Heat dissipation unit and heat dissipation device using same
US-2020232717-A1 · Jul 23, 2020 · US
Hybrid metal-polymer heat exchanger
US-10704846-B2 · Jul 7, 2020 · US
Wickless capillary driven constrained vapor bubble heat pipes for application in electronic devices with various system platforms
US-10694641-B2 · Jun 23, 2020 · US
Engine cooling assembly
US-2020182563-A1 · Jun 11, 2020 · US
Engine cooling system
US-2020182547-A1 · Jun 11, 2020 · US
3d structures and methods therefor
US-2020156309-A1 · May 21, 2020 · US
Heat sink with condensing fins and phase change material
US-10641556-B1 · May 5, 2020 · US
Heating and cooling devices, systems and related method
US-2020003463-A1 · Jan 2, 2020 · US
Heat exchanger with interspersed arrangement of cross-flow structures
US-2019383560-A1 · Dec 19, 2019 · US
High-performance electronics cooling system
US-2019373770-A1 · Dec 5, 2019 · US
Heat exchanger with embedded heat pipes
US-10473408-B2 · Nov 12, 2019 · US
Heating and cooling devices, systems and related method
US-10429105-B1 · Oct 1, 2019 · US
High-performance electronics cooling system
US-10433461-B2 · Oct 1, 2019 · US
Heat exchanger with interspersed arrangement of cross-flow structures
US-10422585-B2 · Sep 24, 2019 · US
High temperature plate fin heat exchanger
US-2019277579-A1 · Sep 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F2215/06?
- CPC F28F2215/06 is the Cooperative Patent Classification code for “Hollow fins; fins with internal circuits.”
- How many patents are filed under CPC F28F2215/06 (Hollow fins; fins with internal circuits)?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC F28F2215/06 growing?
- Publication counts under this code: 10 in 2024 vs 12 in 2025 (latest complete years).