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:
Dec. 22, 1992
Filed:
Sep. 10, 1990
Applicant:
Inventors:
Assignee:
Enichem Sintesi S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; B29D / ;
U.S. Cl.
CPC ...
5262305 ; 5262321 ; 5262322 ; 5262325 ; 526232 ; 264-27 ; 264322 ;
Abstract
Optical articles are obtained by polymerizing, in the form of a flat plate, by means of a free-radical initiator, a polymerizable liquid composition containing diethylene glycol bis(allyl carbonate), tris-hydroxyethylisocyanate tris(allyl-carbonate) and vinyl acetate and/or methyl methacrylate and then submitting the so-obtained plate to thermoforming.
Renzi, Fiorenzo. (1992). Process for the production of thermoformed articles by polymerizing (U.S. Patent No. 5173552). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5173552
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile