Integrated heat exchanger
US-2019186848-A1 · Jun 20, 2019 · US
by welding
by welding · 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 | F28F9/18 |
| Official title | by welding |
| Display label | by welding |
| Total patents | 236 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 9 |
| 2017 | 20 |
| 2018 | 17 |
| 2019 | 24 |
| 2020 | 34 |
| 2021 | 24 |
| 2022 | 34 |
| 2023 | 21 |
| 2024 | 23 |
| 2025 | 14 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat exchanger
US-2018320995-A1 · Nov 8, 2018 · US
Diffuser Plates And Diffuser Plate Assemblies
US-2018320991-A1 · Nov 8, 2018 · US
Method of friction stir welding a tube to an element using a tubular anvil; structure manufactured by this method
US-10113815-B2 · Oct 30, 2018 · US
Multi-fluid heat exchanger arrangement
US-10113801-B2 · Oct 30, 2018 · US
Fin for a plate heat exchanger and method for producing same
US-2018299210-A1 · Oct 18, 2018 · US
Heat exchanger and manufacturing method for the same
US-2018259269-A1 · Sep 13, 2018 · US
Heat exchanger and method of making the same
US-10060680-B2 · Aug 28, 2018 · US
Method for connecting tubes of a shell and tube heat exchanger to a tube bottom of the shell and tube heat exchanger
US-2018236618-A1 · Aug 23, 2018 · US
Laminated header, heat exchanger, air-conditioning apparatus, and method of joining a plate-like unit of a laminated header and a pipe to each other
US-10054368-B2 · Aug 21, 2018 · US
Heat exchanger
US-2018195805-A1 · Jul 12, 2018 · US
Modular Shell-and-Tube Heat Exchanger Apparatuses and Molds and Methods for Forming Such Apparatuses
US-2018180363-A1 · Jun 28, 2018 · US
Heat exchanger
US-9970717-B2 · May 15, 2018 · US
Heat exchanger and production method thereof
US-9970716-B2 · May 15, 2018 · US
Heat exchanger
US-2018094877-A1 · Apr 5, 2018 · US
Heat exchanger and method for producing a heat exchanger
US-9927180-B2 · Mar 27, 2018 · US
Header for a Heat Exchanger, and Method of Making the Same
US-2018066901-A1 · Mar 8, 2018 · US
Plate exchanger for chemical reactors with automatically weldable collectors
US-2018056265-A1 · Mar 1, 2018 · US
Vehicular egr cooler
US-2017370329-A1 · Dec 28, 2017 · US
Attachment device for heat exchanger
US-2017356699-A1 · Dec 14, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F9/18?
- CPC F28F9/18 is the Cooperative Patent Classification code for “by welding.”
- How many patents are filed under CPC F28F9/18 (by welding)?
- Our database includes 236 publications tagged with this CPC code.
- Is patent activity under CPC F28F9/18 growing?
- Publication counts under this code: 23 in 2024 vs 14 in 2025 (latest complete years).