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:
Mar. 01, 2005
Filed:
May. 16, 2002
Luca Castellani, Corsico, IT;
Cristiana Scelza, Angellara Di Vallo Della Lucania, IT;
Gaia Dell'anna, Milan, IT;
Enrico Albizzati, Lesa, IT;
Luca Castellani, Corsico, IT;
Cristiana Scelza, Angellara Di Vallo Della Lucania, IT;
Gaia Dell'Anna, Milan, IT;
Enrico Albizzati, Lesa, IT;
Pirelli Cavi e Sistemi S.p.A., Milan, IT;
Abstract
A cable includes at least one conductor and at least one covering layer. The at least one covering layer includes a thermoplastic polymer material. The polymer material includes a propylene homopolymer or a copolymer of propylene with an olefin comonomer. The olefin comonomer is ethylene, one or more α-olefins other than propylene, or ethylene and one or more α-olefins other than propylene. The homopolymer or copolymer has a melting point between 140° C. and 165° C., a melting enthalpy between 30 J/g and 80 J/g, a boiling diethyl ether soluble fraction less than or equal to 12 wt % and melting enthalpy less than or equal to 4 J/g, a boiling n-heptane soluble fraction between 15 wt % and 60 wt % and melting enthalpy between 10 J/g and 40 J/g, and a boiling n-heptane insoluble fraction between 40 wt % and 8 wt % and melting enthalpy greater than or equal to 45 J/g.