Refrigeration apparatus
US-11204193-B2 · Dec 21, 2021 · US
the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence)
the heat-exchange media travelling at an angle to one another (F28D9/04 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 | F28D9/02 |
| Official title | the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence) |
| Display label | the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence) |
| Total patents | 112 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 11 |
| 2019 | 9 |
| 2020 | 9 |
| 2021 | 16 |
| 2022 | 10 |
| 2023 | 16 |
| 2024 | 9 |
| 2025 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger
US-11199365-B2 · Dec 14, 2021 · US
Multi-branch furcating flow heat exchanger
US-2021239401-A1 · Aug 5, 2021 · US
Flow-path structure
US-11073073-B2 · Jul 27, 2021 · US
Energy recovery system, vehicle, and method of recovering energy
US-2021180502-A1 · Jun 17, 2021 · US
Total heat exchange element and method for manufacturing same
US-2021140723-A1 · May 13, 2021 · US
Multi-branch furcating flow heat exchanger
US-10995996-B2 · May 4, 2021 · US
Stacked heat exchanger
US-10962307-B2 · Mar 30, 2021 · US
Plate fin crossflow heat exchanger
US-2021033352-A1 · Feb 4, 2021 · US
Plate heat exchanger and heat pump heating and hot water supply system including the plate heat exchanger
US-10907906-B2 · Feb 2, 2021 · US
Flow-path structure
US-2020332706-A1 · Oct 22, 2020 · US
Heat exchanger with sliding aperture valve
US-10809021-B2 · Oct 20, 2020 · US
Air-Oil Heat Exchanger
US-2020263561-A1 · Aug 20, 2020 · US
Methods and systems for a heat exchanger
US-10746484-B2 · Aug 18, 2020 · US
Heat exchanger including furcating unit cells
US-10739077-B2 · Aug 11, 2020 · US
Heat exchanger with multipass fluid flow passages
US-2020240721-A1 · Jul 30, 2020 · US
Compression device having connection unit for cooling unit
US-10677235-B2 · Jun 9, 2020 · US
Plate-type heat exchanger and heat source apparatus
US-2020166282-A1 · May 28, 2020 · US
Heat treatment device
US-2020018553-A1 · Jan 16, 2020 · US
Refrigeration apparatus
US-2019338993-A1 · Nov 7, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D9/02?
- CPC F28D9/02 is the Cooperative Patent Classification code for “the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence).”
- How many patents are filed under CPC F28D9/02 (the heat-exchange media travelling at an angle to one another (F28D9/04 takes precedence))?
- Our database includes 112 publications tagged with this CPC code.
- Is patent activity under CPC F28D9/02 growing?
- Publication counts under this code: 9 in 2024 vs 11 in 2025 (latest complete years).