Indirect-type air cooler
US-10113807-B2 · Oct 30, 2018 · US
with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates · 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 | F28D9/0056 |
| Official title | {with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates} |
| Display label | with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates |
| Total patents | 246 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 15 |
| 2017 | 20 |
| 2018 | 30 |
| 2019 | 32 |
| 2020 | 33 |
| 2021 | 28 |
| 2022 | 23 |
| 2023 | 13 |
| 2024 | 16 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Manifold structure for re-directing a fluid stream
US-10077952-B2 · Sep 18, 2018 · US
Condenser
US-10060658-B2 · Aug 28, 2018 · US
Heat exchanger
US-2018195431-A1 · Jul 12, 2018 · US
Heat exchanger, method of producing heat exchanger, and fuel cell system
US-9991527-B2 · Jun 5, 2018 · US
Heat exchanger having bypass seal with retention clip
US-2018128555-A1 · May 10, 2018 · US
Heat exchanger
US-2018058306-A1 · Mar 1, 2018 · US
Heat exchanger plate with bypass zone
US-9903661-B2 · Feb 27, 2018 · US
Heat exchanger
US-2018023898-A1 · Jan 25, 2018 · US
Manifold integrated intercooler with structural core
US-2017335746-A1 · Nov 23, 2017 · US
Heat Exchanger for Heating a Fluid Using Exhaust Gas
US-2017335740-A1 · Nov 23, 2017 · US
Heat exchanger and sheet for the exchanger
US-9797663-B2 · Oct 24, 2017 · US
Plate heat exchanger plate and a plate heat exchanger
US-9746251-B2 · Aug 29, 2017 · US
Brazed Heat Exchanger and Production Method
US-2017241716-A1 · Aug 24, 2017 · US
Indirect-Type Air Cooler
US-2017227295-A1 · Aug 10, 2017 · US
Heat exchanger arrangement in a housing
US-9709342-B2 · Jul 18, 2017 · US
Composite Heat Exchanger for Batteries and Method of Making Same
US-2017194679-A1 · Jul 6, 2017 · US
Heat exchanger
US-2017184347-A1 · Jun 29, 2017 · US
Internal degas feature for plate-fin heat exchangers
US-2017167806-A1 · Jun 15, 2017 · US
Heat exchanger arrangement and production method
US-9671168-B2 · Jun 6, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D9/0056?
- CPC F28D9/0056 is the Cooperative Patent Classification code for “with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates.”
- How many patents are filed under CPC F28D9/0056 (with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates)?
- Our database includes 246 publications tagged with this CPC code.
- Is patent activity under CPC F28D9/0056 growing?
- Publication counts under this code: 16 in 2024 vs 17 in 2025 (latest complete years).