Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US-11391521-B2 · Jul 19, 2022 · US
and extending obliquely (F28F1/38 takes precedence)
and extending obliquely (F28F1/38 takes precedence) · 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 | F28F1/34 |
| Official title | and extending obliquely (F28F1/38 takes precedence) |
| Display label | and extending obliquely (F28F1/38 takes precedence) |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 13 |
| 2019 | 13 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 5 |
| 2025 | 15 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Matrix for an Air/Oil Heat Exchanger of a Jet Engine
US-2022074678-A1 · Mar 10, 2022 · US
Heat exchanger with non-orthogonal perforations
US-11215405-B2 · Jan 4, 2022 · US
Matrix for an air/oil heat exchanger of a jet engine
US-11125511-B2 · Sep 21, 2021 · US
Heat exchanger, air conditioner, and apparatus for manufacturing heat exchanger
US-2021285662-A1 · Sep 16, 2021 · US
Component with differing material properties
US-11091848-B2 · Aug 17, 2021 · US
Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US-2021239409-A1 · Aug 5, 2021 · US
Heat transfer tube and method for manufacturing a heat transfer tube
US-10981080-B2 · Apr 20, 2021 · US
Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus
US-2021108864-A1 · Apr 15, 2021 · US
Condenser tubes with additional flank structure
US-10974309-B2 · Apr 13, 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
Metal foam heat exchangers for air and gas cooling and heating applications
US-2021033318-A1 · Feb 4, 2021 · US
Additively manufactured heat exchangers
US-10843267-B2 · Nov 24, 2020 · US
Additively manufactured heat exchanger
US-10830540-B2 · Nov 10, 2020 · US
Heat sink
US-10809011-B2 · Oct 20, 2020 · US
Heat exchanger and air conditioner having the same
US-2020096206-A1 · Mar 26, 2020 · US
Heat sink
US-10598441-B2 · Mar 24, 2020 · US
Additively Manufactured Heat Exchanger
US-2020072559-A1 · Mar 5, 2020 · US
Heat transfer tube and method for manufacturing a heat transfer tube
US-2020056331-A1 · Feb 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F1/34?
- CPC F28F1/34 is the Cooperative Patent Classification code for “and extending obliquely (F28F1/38 takes precedence).”
- How many patents are filed under CPC F28F1/34 (and extending obliquely (F28F1/38 takes precedence))?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC F28F1/34 growing?
- Publication counts under this code: 5 in 2024 vs 15 in 2025 (latest complete years).