Heat exchanger closure assemblies and methods of using and installing the same
US-12455123-B2 · Oct 28, 2025 · US
Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10)
Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10) · 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 | F28F11/00 |
| Official title | Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10) |
| Display label | Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10) |
| Total patents | 61 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat sink assembly and manufacturing method thereof
US-2025305777-A1 · Oct 2, 2025 · US
Heat exchanger with leak detection system
US-2025172345-A1 · May 29, 2025 · US
Method for protecting tubes of a heat exchanger
US-2025003700-A1 · Jan 2, 2025 · US
Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases
US-12181228-B2 · Dec 31, 2024 · US
Heat exchanger
US-12130100-B2 · Oct 29, 2024 · US
Sealing retainer to be coupled between chassis and electronic module and associated method
US-12066257-B2 · Aug 20, 2024 · US
Heat exchanger sealing plate for air conditioner, indoor unit and air conditioner
US-2024255158-A1 · Aug 1, 2024 · US
Heat exchanger closure assemblies and methods of using and installing the same
US-11971229-B2 · Apr 30, 2024 · US
Heat exchanger closure assemblies and methods of using and installing the same
US-2024085126-A1 · Mar 14, 2024 · US
Heat exchanger closure assemblies and methods of using and installing the same
US-11852424-B2 · Dec 26, 2023 · US
Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases
US-2023392883-A1 · Dec 7, 2023 · US
Vapor chamber with improved fixing structure for degassing tube
US-2023356113-A1 · Nov 9, 2023 · US
Sealing retainer to be coupled between chassis and electronic module and associated method
US-2023349649-A1 · Nov 2, 2023 · US
Heat exchanger
US-11802733-B2 · Oct 31, 2023 · US
Heat management apparatus and heat management system
US-2023216101-A1 · Jul 6, 2023 · US
Self-healing metal composite tube walls
US-11623417-B2 · Apr 11, 2023 · US
Plate fin heat exchanger and repair method for plate fin heat exchanger
US-11549763-B2 · Jan 10, 2023 · US
Heat Exchanger
US-2023003463-A1 · Jan 5, 2023 · US
Heat exchanger
US-11519678-B2 · Dec 6, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F11/00?
- CPC F28F11/00 is the Cooperative Patent Classification code for “Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10).”
- How many patents are filed under CPC F28F11/00 (Arrangements for sealing leaky tubes and conduits (stopping flow from or in pipes in general F16L55/10))?
- Our database includes 61 publications tagged with this CPC code.
- Is patent activity under CPC F28F11/00 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).