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. 05, 2003
Filed:
Feb. 23, 2001
Applicant:
Inventor:
Suguru Imafuku, Tokyo, JP;
Assignee:
Hoya Healthcare Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 ; C08G 7/712 ; C08G 7/714 ;
U.S. Cl.
CPC ...
G02C 7/04 ; C08G 7/712 ; C08G 7/714 ;
Abstract
A material for contact lenses having excellent flexibility and oxygen permeability are disclosed. The material comprises a copolymer essentially comprising a siloxane macromer of component (A) which has the number-average molecular weight of from about 1,000 to 10,000 and is represented by the general formula (I), a water-insoluble monoolefin monomer of component (B), and a water-soluble monoolefin monomer of component (C). A soft contact lens which is obtained by injecting to a mold in the shape of contact lens the components (A), (B) and (C); copolymerizing the monomer mixture; and making the resulting copolymer contain water,