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. 15, 1990
Filed:
Nov. 14, 1988
Applicant:
Inventor:
Claude Bourelier, Paris, FR;
Assignee:
Saint-Gobain Vitrage 'Les Miroirs', Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B32B / ;
U.S. Cl.
CPC ...
425 94 ; 264171 ; 26421112 ; 425101 ; 425104 ; 425112 ; 425327 ; 425363 ; 4253781 ; 425397 ; 425445 ;
Abstract
A process and a device for producing a plastic sheet of high optical quality and including at least one layer having a base of a polyurethane exhibiting energy-absorbing properties. The polyurethane layer is obtained by extrusion followed immediately after by a finishing by a pressing at a temperature higher than the temperature of the softening point of the polyurethane layer. The finishing imparts to the sheet optical quality making it suitable for use in the production of laminated glazings.