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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.:

US 4671838 B1

PDFFull Text
Date of Patent:
Jun. 09, 1987

Filed:

Aug. 25, 1986

Preparation of bilayer laminate and preformed sheet for use therein

Applicant:
Inventors:

Jean L Bravet, Thourotte, FR;

Daniel Colmon, Thourotte, FR;

Gerard Daude, Villeneuve D Oron, FR;

Michel J Moncheaux, Compiegne, FR;

Assignee:

Saint-Gobain Vitrage, Courbevoir, FR;

Attorney:

Oblon, Fisher, Spivak, McClelland & Maier

Primary Examiner:

Herbert S Cockeram

Int. Cl.
CPC ...
B32B / ; B29C / ; C09K / ; C08G / ;
U.S. Cl.
CPC ...
156246 ; 252182 ; 26433119 ; 528 59 ; 528 61 ; 156 99 ; 428412 ; 4284231 ; 4284244 ; 4284256 ;
Abstract

Preformed, energy-absorbing, scratch resistant, optical, flexible, and self-healing polyurethane sheets, which are adhesive under the influence of heat and pressure; bilayer glazing laminates and bilayer safety windshields including said sheets; wherein said polyurethane sheet is prepared preferably by reactive-casting on a horizontal support and formed preferably from a polyisocyanate monomer including about 2 to about 10 wt. % of urea groups.

Find Patent Forward Citations

Bravet, Jean. (1987). Preparation of bilayer laminate and preformed sheet for use therein (U.S. Patent No. 4671838). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4671838

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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