Pipes made of polymeric material
US6772795B2 · kind B2 · utility
0Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1393
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A pipe constituted by an inner wall produced with a first high-performance thermoplastic polymeric material having a distortion temperature under load in accordance with standard HDT-A ISO75 of at least 275° C. and an outer wall produced from a second thermoplastic material belonging to the same family of chemical polymers as the high-performance thermoplastic material and coinjected therewith for production of the pipe itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.