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:
Feb. 04, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Hideaki Doi, Matsudo, JP;
Teruo Sakagami, Nerima, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08G / ;
U.S. Cl.
CPC ...
526274 ; 528392 ;
Abstract
An optical material of a high refractive index is formed of a copolymer obtained by polymerizing 10-90 wt. % of a monomer represented by the following formula (I) and 90-10 wt. % of a monomer copolymerizable with the first-mentioned monomer. ##STR1## wherein R is a hydrogen atom or methyl group.