Double pipe heat exchanger connection, method of making same, and quench exchanger design including same
US-2024353187-A1 · Oct 24, 2024 · US
Mechanical Engineering
Mechanical Engineering · 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 | F28F1/003 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 118 |
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 | 5 |
| 2016 | 4 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 12 |
| 2020 | 9 |
| 2021 | 19 |
| 2022 | 15 |
| 2023 | 12 |
| 2024 | 12 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Refrigeration apparatus
US-11204193-B2 · Dec 21, 2021 · US
Additively manufactured support structure for barrier layer
US-2021302103-A1 · Sep 30, 2021 · US
Additively manufactured permeable barrier layer and method of manufacture
US-2021302109-A1 · Sep 30, 2021 · US
Double tube with petal shape and method of manufacturing the same
US-11085706-B2 · Aug 10, 2021 · US
Heat exchanger for quenching reaction gas
US-11029096-B2 · Jun 8, 2021 · US
Heat exchange tube and heat exchanger having the same
US-2021131748-A1 · May 6, 2021 · US
Heat Exchanger with Active Buffer Layer
US-2021102492-A1 · Apr 8, 2021 · US
Plate heat exchanger, heat pump device including plate heat exchanger, and heat pump type of cooling, heating, and hot water supply system including heat pump device
US-2020408475-A1 · Dec 31, 2020 · US
Fuel heat exchanger with a barrier
US-2020309462-A1 · Oct 1, 2020 · US
Heat exchanging device
US-2020309634-A1 · Oct 1, 2020 · US
Self-healing metal composite tube walls
US-2020276777-A1 · Sep 3, 2020 · US
Self-venting refrigerant coil
US-2020238791-A1 · Jul 30, 2020 · US
Self-healing metal composite tube walls
US-10682823-B2 · Jun 16, 2020 · US
Heat exchanger for quenching reaction gas
US-2020103173-A1 · Apr 2, 2020 · US
Impact resistant structural radiator tube
US-2020088474-A1 · Mar 19, 2020 · US
Battery pack having function of preventing inflow of leaking coolant
US-2020036066-A1 · Jan 30, 2020 · US
Heat Exchanger and Leak Detection System
US-2019383564-A1 · Dec 19, 2019 · US
Refrigeration apparatus
US-2019338993-A1 · Nov 7, 2019 · US
Vertical bundle air-cooled heat exchnager, method of manufacturing the same, and power generation plant implementing the same
US-2019283191-A1 · Sep 19, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F1/003?
- CPC F28F1/003 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F28F1/003 (Mechanical Engineering)?
- Our database includes 118 publications tagged with this CPC code.
- Is patent activity under CPC F28F1/003 growing?
- Publication counts under this code: 12 in 2024 vs 6 in 2025 (latest complete years).