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:
May. 06, 2003
Filed:
Oct. 26, 2001
Applicant:
Inventors:
Tsuyoshi Okubo, Tokyo, JP;
Jian Jiang, Tokyo, JP;
Assignee:
Hoya Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G 7/504 ;
U.S. Cl.
CPC ...
C08G 7/504 ;
Abstract
Asymmetric disulfide compounds and methods for their preparation are described. An optical product can be made of a polymer that is obtained by using at least one asymmetric disulfide compound as an essential monomer component. These polymers can be used to form an optical product having a high refractive index and a high Abbe's number and having superior heat resistance, superior weather resistance and superior transparency.