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:
May. 25, 2021
Filed:
Oct. 30, 2017
Prysmian S.p.a., Milan, IT;
Zekeriya Sirin, Milan, IT;
Baris Soenmez, Milan, IT;
PRYSMIAN S.P.A., Milan, IT;
Abstract
A flame-retardant optical cable is disclosed which includes a polymeric central loose tube housing optical fibres, a metallic armour surrounding the polymeric central loose tube, and a multi-layered sheath surrounding and in direct contact with the metallic armour. The multi-layered sheath includes an inner layer, an intermediate layer, and an outer layer, all made of a LSoH flame-retardant material. The LSoH flame-retardant material of the intermediate layer has a limiting oxygen index (LOI) higher than the LOI of the LSoH flame-retardant material of the inner layer and of the outer layer. Such cable has improved flame-retardant properties, particularly in terms of slowing flame propagation, heat release, droplets and emission of smokes, when it is exposed to flames during fire.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile