Method of joining dissimilar material pipes and dissimilar material pipe
US-2025347365-A1 · Nov 13, 2025 · US
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Shrunk pipe-joints
Shrunk pipe-joints · 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 | F16L13/004 |
| Official title | {Shrunk pipe-joints} |
| Display label | Shrunk pipe-joints |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Biaxially oriented pipe with a thickened end portion
US-11992997-B2 · May 28, 2024 · US
Tube coupling
US-11788655-B2 · Oct 17, 2023 · US
Tube coupling
US-2023022280-A1 · Jan 26, 2023 · US
Pipe connection and method of producing pipe connection
US-2022299147-A1 · Sep 22, 2022 · US
Biaxially oriented pipe with a thickened end portion
US-2022297373-A1 · Sep 22, 2022 · US
Process for modifying and joining oriented pipes
US-11396124-B2 · Jul 26, 2022 · US
Duct with shape memory material, and installation method
US-10927987-B2 · Feb 23, 2021 · US
Leak-proof connection fitting
US-10760716-B1 · Sep 1, 2020 · US
Hose connection
US-10711928-B2 · Jul 14, 2020 · US
Process for modifying and joining oriented pipes
US-2020039138-A1 · Feb 6, 2020 · US
Heat-shrinkable tube covering
US-2019040991-A1 · Feb 7, 2019 · US
Duct with shape memory material, and installation method
US-2017082233-A1 · Mar 23, 2017 · US
Joining device
US-9133966-B2 · Sep 15, 2015 · US
Heat-shrinkable tube covering
US-9046200-B2 · Jun 2, 2015 · US