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. 08, 1998
Filed:
Jan. 26, 1994
Applicant:
Inventors:
Robert A Janssen, Alpharetta, GA (US);
Ellen M Ajello, Decatur, GA (US);
Richard D Auten, Cumming, GA (US);
Glenn S Nomura, Altanta, GA (US);
Thomas E Shank, Duluth, GA (US);
Assignee:
CIBA Vision Corporation, Duluth, GA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02C / ; G02C / ; C08F / ;
U.S. Cl.
CPC ...
3511 / ; 351166 ; 523106 ; 523108 ; 525479 ; 525937 ;
Abstract
The invention relates to a process for modifying the surface characteristics of a preformed polymer substrate to impart altered properties thereto by graft polymerization on the substrate which includes: placing the polymer substrate in a plasma to form free radicals on the substrate; contacting the substrate having free radicals with oxygen to form hydroperoxy groups on the surface of the substrate; and graft polymerizing an ethylenically unsaturated monomer onto the surface of the polymer substrate.