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:
Jan. 19, 1982
Filed:
Oct. 24, 1980
Applicant:
Inventors:
Anton A Spycher, Big Flats, NY (US);
Dennis J Damico, Erie, PA (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; G02C / ;
U.S. Cl.
CPC ...
428412 ; 351163 ; 351166 ; 4284231 ; 4284237 ; 4284255 ; 428437 ; 528228 ; 528314 ;
Abstract
Low hardness and scratch resistance in direct-cast diethylene glycol bis(allyl carbonate) (CR-39.RTM. plastic surface laminae in glass-plastic lenses are analyzed and new plastic formulations, preferably comprising the monomer catalyzed with a mixed isopropyl percarbonate-benzoyl peroxide polymerization catalyst, are disclosed, offering improved hardness and scratch resistance for laminated lenses and also for CR-39.RTM. plastic articles generally.