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:
Sep. 11, 1990
Filed:
Jun. 09, 1989
Applicant:
Inventors:
Kazumi Higashi, Osaka, JP;
Toshio Nakajima, Osaka, JP;
Atsushi Hino, Osaka, JP;
Sunao Inoue, Osaka, JP;
Assignees:
Nitto Denko Corporation, Osaka, JP;
Menicon Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623-6 ; 528185 ;
Abstract
An intra-ocular lens comprising a lens part and a fixing part is disclosed, said lens part comprising a colorless transparent polyimide consisting mainly of a repeating unit represented by formula (I): ##STR1## The intra-ocular lens exhibits compatibility with the organism, chemical inactivity, and insusceptibility to modification or deterioration by the organism, has a refractive index of 1.6 or higher, completely absorbs ultraviolet rays while exhibiting substantial transparency to visible rays, and possesses heat resistance enough to withstand autoclaving.