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:
Jul. 01, 2003
Filed:
Jun. 04, 2001
Applicant:
Inventors:
Kazuhiko Ooga, Oita, JP;
Yoshifumi Asai, Oita, JP;
Yasuzi Tanaka, Oita, JP;
Tsuneo Tajima, Oita, JP;
Hiroshi Uchida, Oita, JP;
Assignee:
Showa Denko K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/00 ; C08K 3/20 ; C08K 5/09 ; C08K 5/10 ; C08L 6/707 ;
U.S. Cl.
CPC ...
C08J 3/00 ; C08K 3/20 ; C08K 5/09 ; C08K 5/10 ; C08L 6/707 ;
Abstract
A plastic lens material comprising a compound in which a part or all of 1,4-cyclohexane dicarboxylate structural units are a cis structure; a production process of the material; a plastic lens composition containing the material; a plastic lens obtained by curing the composition; and a production process of the plastic lens. A plastic lens material free of changing into a white and turbid material during storage for a long period of time is provided.