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:
Mar. 16, 1993
Filed:
May. 22, 1990
Applicant:
Inventor:
Amitava Gupta, San Marino, CA (US);
Assignee:
Ioptex Research, Inc., Irwingdale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C07D / ;
U.S. Cl.
CPC ...
523106 ; 514972 ; 524 94 ; 524194 ; 548257 ; 548261 ;
Abstract
The novel compound of the formula ##STR1## has been found to be useful as a UV absorber. A novel PMMA material has incorporated therein a UV absorbing amount of the novel UV absorber. Intraocular lenses and contact lenses are produced from PMMA having incorporated therein a UV absorbing amount of the novel UV absorber. Eyeglasses are produced having lenses of a polycarbonate material which has incorporated therein a UV absorbing amount of the novel UV absorbed.