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:
Aug. 28, 2001
Filed:
Sep. 29, 1999
Applicant:
Inventors:
Franz-Josef Riesselmann, Lohne, DE;
Harald Eichner, Ochtrup, DE;
Josef Bruenen, Wettringen, DE;
Paul Wolters, Ochtrup, DE;
Nils Wehmeier, Osnabrueck, DE;
Assignee:
Hewing GmbH, Ochtrup, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 1/111 ;
U.S. Cl.
CPC ...
F16L 1/111 ;
Abstract
A multi-layer plastic tube comprises a base tube and a barrier layer surrounding the base tube, the barrier layer being impermeable to oxygen, and a protective layer applied on the barrier layer for protecting the barrier layer from damage, wherein the material of the barrier layer and protective layers may include a lubricant.