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:
Jan. 22, 1985
Filed:
Dec. 15, 1982
Applicant:
Inventors:
Taro Suminoe, Tokyo, JP;
Tetsuo Ito, Machida, JP;
Yasuhiro Kiyomatsu, Yokohama, JP;
Takao Shimizu, Toda, JP;
Assignees:
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Ricky Contact Lens Research Institute Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
8507 ; 8509 ; 8650 ;
Abstract
A uniformly colored shaped article which is resistant to discoloration and fading can be produced by immersing a shaped article, particularly a contact lens, consisting of a polymer of at least one monomer selected from the group consisting of acrylates and methacrylates in a dyeing solution prepared by dissolving a water-soluble dye in a solvent capable of swelling said polymer, to swell and color the shaped article, and then drying the swollen shaped article.