Process for the production of piping made of a cementitious material having a circular section
US8070997B2 · kind B2 · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2006 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Jul 15, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B21/52
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for the production by extrusion of piping made of a cementitious material having a circular section and fine thickness, suitable for the channeling of liquids and gases at atmospheric operating pressure or slightly higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.