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:
Jul. 18, 2006
Filed:
Nov. 08, 2001
Applicants:
Kari Kirjavainen, Espoo, FI;
Jyri Jarvenkyla, Hollola, FI;
Inventors:
Kari Kirjavainen, Espoo, FI;
Jyri Jarvenkyla, Hollola, FI;
Assignee:
Uponor Innovation AB, Fristad, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 55/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pipe has an innermost layer, outside of which there is an inner electrode layer, outside of which there is an insulating layer, outside of which there is an outer electrode layer. The innermost layer is made of plastic by continuous extrusion and the insulating layer is made of foamed plastic.