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:
Aug. 27, 1991
Filed:
Nov. 21, 1989
Applicant:
Inventors:
Masayoshi Oshima, Niiza, JP;
Tadao Natsuume, Yokosuka, JP;
Assignee:
Nippon Zeon Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5253328 ; 5253329 ; 5253331 ; 5253332 ; 525338 ; 525339 ; 525353 ; 525371 ;
Abstract
There is disclosed an optical material comprising a cyclization product of a conjugated diene polymer having a cyclization ratio of not less than 80% or a hydrogenated product thereof.