Tube heat exchanger using 3-tube bundles
US-12152839-B2 · Nov 26, 2024 · US
by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 takes precedence)
by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 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 | F28F9/165 |
| Official title | {by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 takes precedence)} |
| Display label | by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 takes precedence) |
| Total patents | 62 |
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 | 1 |
| 2016 | 2 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 14 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat transfer enhancement pipe as well as cracking furnace and atmospheric and vacuum heating furnace including the same
US-12123661-B2 · Oct 22, 2024 · US
Heat transfer enhancement pipe as well as cracking furnace and atmospheric and vacuum heating furnace including the same
US-11976891-B2 · May 7, 2024 · US
Tube heat exchanger using 3-tube bundles
US-2024118035-A1 · Apr 11, 2024 · US
Heat exchange reactor seal apparatus
US-2024035758-A1 · Feb 1, 2024 · US
Connector
US-2024019220-A1 · Jan 18, 2024 · US
Shell and tube isolation in heat exchanger
US-2023417496-A1 · Dec 28, 2023 · US
Cooker with gasket
US-11849882-B2 · Dec 26, 2023 · US
Heat exchanger
US-2023358477-A1 · Nov 9, 2023 · US
Header of a heat exchanger provided with a member for retention and/or angular positioning of a device for distribution of a refrigerant fluid
US-11774193-B2 · Oct 3, 2023 · US
Header-tank assembly
US-11609050-B2 · Mar 21, 2023 · US
High pressure strippers for use in urea plants
US-11571678-B2 · Feb 7, 2023 · US
Heat exchanger
US-11428473-B2 · Aug 30, 2022 · US
Heat exchanger
US-11255609-B2 · Feb 22, 2022 · US
Heat exchanger
US-11255619-B2 · Feb 22, 2022 · US
Heat exchanger for a motor vehicle and corresponding production method
US-11187472-B2 · Nov 30, 2021 · US
Header-tank assembly
US-2021356219-A1 · Nov 18, 2021 · US
Combined heat exchanger module
US-11167618-B2 · Nov 9, 2021 · US
Heat exchanger
US-11137210-B2 · Oct 5, 2021 · US
Annular seal for motor vehicle heat exchanger
US-11137219-B2 · Oct 5, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F9/165?
- CPC F28F9/165 is the Cooperative Patent Classification code for “by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 takes precedence).”
- How many patents are filed under CPC F28F9/165 (by using additional preformed parts, e.g. sleeves, gaskets (F28F9/185 takes precedence))?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC F28F9/165 growing?
- Publication counts under this code: 6 in 2024 vs 1 in 2025 (latest complete years).