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:
Dec. 07, 2004
Filed:
Jan. 08, 1999
Applicant:
Inventors:
Franco Peruzzotti, Legnano, IT;
Luca Castellani, Corsico, IT;
Luis José Dacal, Monza, IT;
Valeria Garcia, Brugherio, IT;
Assignee:
Pirelli Cavi S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
H01B 7/00 ;
U.S. Cl.
CPC ...
H01B 7/00 ;
Abstract
The present invention is an improved electric insulation composition of a polymer and an additive that reduces water treeing due to electrical aging in water. The polymer additive is a hydrophobic/hydrophilic material with good compatibility with the polymer. The present invention is also a method of preventing electrical breakdown due to the formation of water trees by forming electrical cables with the insulation containing the disclosed anti-treeing additives.