The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2005
Filed:
Oct. 16, 2001
Applicants:
André Scheelen, Brussels, BE;
Eric Vandevijver, Woluwe-Saint-Pierre, BE;
Inventors:
André Scheelen, Brussels, BE;
Eric Vandevijver, Woluwe-Saint-Pierre, BE;
Assignee:
Solvay Polyolefins Europe-Belgium (S.A.), Brussels, BE;
Primary Examiner:
Int. Cl.
CPC ...
F19L011/00 ;
U.S. Cl.
CPC ...
Abstract
Multi-layered pipe comprising a main layer of polyethylene compound having a resistance to stress cracking NPT measured according to ISO 13479 standard of less than 8000 hours and an internal layer of polyethylene compound having a resistance to stress cracking NPT of higher than 8000 hours, the thickness of the internal layer being between 1 and 25% of the total pipe thickness but not less than 0.3 mm.