Pipes for conveying drinking water
US6511724B1 · kind B1 · utility
6Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1996 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Mar 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to pipes for conveying drinking water, including a main layer made of polyolefin covered on the outside with a layer of a thermoplastic polymer which is impervious to hydrocarbons, such as, for example, polyamides, polyvinylidene fluoride, ethyl/vinyl alcohol copolymers or polyesters. These pipes are particularly useful for pipes buried in soils that may be contaminated with hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.