Fibre reinforced polymer composite pipes
US-11761562-B2 · Sep 19, 2023 · US
the walls consisting of two layers
the walls consisting of two layers · 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 | F16L9/133 |
| Official title | the walls consisting of two layers |
| Display label | the walls consisting of two layers |
| Total patents | 79 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 10 |
| 2017 | 9 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 8 |
| 2021 | 7 |
| 2022 | 4 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Structure, structure for vehicles, and air conditioning duct for vehicles
US-11701860-B2 · Jul 18, 2023 · US
Composite connectors and methods of manufacturing the same
US-11673301-B2 · Jun 13, 2023 · US
Multilayer Structure, Method for Producing Same, Sheet for Preventing Diffusion of Hazardous Substances, Landfill Geomembrane, and Multilayer Pipe
US-2023158785-A1 · May 25, 2023 · US
Pipeline member for ultrapure water and polyethylene-based resin composition for pipeline member for ultrapure water
US-2023151223-A1 · May 18, 2023 · US
Pipe for a vehicle fuel tank suitable for welding
US-11623509-B2 · Apr 11, 2023 · US
Coextruded Polyethylene Pipe and Methods of Making and Using Same
US-2023039633-A1 · Feb 9, 2023 · US
PE-RT pipes and processes for making the same
US-11479624-B2 · Oct 25, 2022 · US
Dissipative peristaltic pump tubing
US-11338540-B2 · May 24, 2022 · US
Multi-layer tube
US-11254082-B2 · Feb 22, 2022 · US
Fluid transport pipe and use thereof
US-11254083-B2 · Feb 22, 2022 · US
Structure, structure for vehicles, and air conditioning duct for vehicles
US-2021362464-A1 · Nov 25, 2021 · US
Piping for ultra-pure water and multi-layer tube
US-2021324977-A1 · Oct 21, 2021 · US
Composite tubing and method for making and using same
US-11149880-B2 · Oct 19, 2021 · US
Multilayer tube
US-2021252823-A1 · Aug 19, 2021 · US
Insulated conduit including a fluoropolymer composition for use as a thermal insulation layer
US-11034124-B2 · Jun 15, 2021 · US
Extension tube for electric vacuum cleaner
US-2021093141-A1 · Apr 1, 2021 · US
Pipe for a vehicle fuel tank suitable for welding
US-2021053438-A1 · Feb 25, 2021 · US
Multilayer water pipe for mining operations
US-10843432-B2 · Nov 24, 2020 · US
Dissipative peristaltic pump tubing
US-2020346426-A1 · Nov 5, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L9/133?
- CPC F16L9/133 is the Cooperative Patent Classification code for “the walls consisting of two layers.”
- How many patents are filed under CPC F16L9/133 (the walls consisting of two layers)?
- Our database includes 79 publications tagged with this CPC code.
- Is patent activity under CPC F16L9/133 growing?
- Publication counts under this code: 8 in 2024 vs 10 in 2025 (latest complete years).