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:
Apr. 05, 2005
Filed:
Jan. 19, 2000
Andrea DE Toffol, Milan, IT;
Alberto Luca Stasi, Milan, IT;
Andrea De Toffol, Milan, IT;
Alberto Luca Stasi, Milan, IT;
Elf Atochem S.A., Puteaux, FR;
Abstract
A thermoplastic material composite panel, comprising a transparent thermoplastic base layer, light conducting, having a thickness generally in the range 3-40 mm, and a light diffusing layer, having a thickness generally in the range 10-1500 micron, placed on one face of the base layer, said diffusing layer being characterized in that it contains barium sulphate in amount by weight, expressed as per cent ratio on the total weight of the diffusing layer, in the range 0.01-2%, the barium sulphate having average particle sizes in the range 0.1-50 micron, the composite sizes being-greater than or equal to 10 cm.