Tube for a heat exchanger
US-2026063373-A1 · Mar 5, 2026 · US
with dimples
with dimples · 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 | F28F2001/027 |
| Official title | {with dimples} |
| Display label | with dimples |
| Total patents | 50 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 11 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger systems and devices for reduced pressure loss
US-12405071-B2 · Sep 2, 2025 · US
Core body for transfer apparatus
US-12398960-B2 · Aug 26, 2025 · US
Heat exchanger systems and devices for reduced pressure loss
US-2024240879-A1 · Jul 18, 2024 · US
Collecting Tube and Heat Exchanger
US-2023332835-A1 · Oct 19, 2023 · US
Core body for transfer apparatus
US-2023332845-A1 · Oct 19, 2023 · US
Heat exchanger tubes and tube assembly configurations
US-11774179-B2 · Oct 3, 2023 · US
Erg cooler for brazing joint and method of manufacturing the same
US-2023304747-A1 · Sep 28, 2023 · US
Heat Exchange Flat Tube and Heat Exchanger
US-2023228505-A1 · Jul 20, 2023 · US
Heat exchanger of exhaust heat recovery apparatus
US-11603782-B2 · Mar 14, 2023 · US
Heat exchanger
US-2022381523-A1 · Dec 1, 2022 · US
Heat exchanger flat tube and heat exchanger with heat exchanger flat tube
US-11512911-B2 · Nov 29, 2022 · US
Heat exchanger tube with flattened draining dimple
US-11498162-B2 · Nov 15, 2022 · US
Heat exchanger
US-11486648-B2 · Nov 1, 2022 · US
Flat tube for an exhaust gas cooler
US-11421949-B2 · Aug 23, 2022 · US
Heat exchanger and manufacturing method therefor
US-11358208-B2 · Jun 14, 2022 · US
Heat exchanger
US-11236952-B2 · Feb 1, 2022 · US
Heat exchanger tubes
US-2021348855-A1 · Nov 11, 2021 · US
Heat exchanger tubes
US-11073344-B2 · Jul 27, 2021 · US
Heat Exchanger Flat Tube and Heat Exchanger with Heat Exchanger Flat Tube
US-2021215443-A1 · Jul 15, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F2001/027?
- CPC F28F2001/027 is the Cooperative Patent Classification code for “with dimples.”
- How many patents are filed under CPC F28F2001/027 (with dimples)?
- Our database includes 50 publications tagged with this CPC code.
- Is patent activity under CPC F28F2001/027 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).