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:
Jun. 27, 1978
Filed:
Apr. 07, 1976
Applicant:
Inventors:
Charles L Sieglaff, Mentor, OH (US);
Charles J Hora, Willoughby Hills, OH (US);
Joseph P Tiefenbach, Mentor, OH (US);
Assignee:
Diamond Shamrock Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 30 ; 351160 ; 526 522 ; 526 523 ; 526 525 ; 526 55 ;
Abstract
Polymer hydrogels adapted for use as soft contact lenses are treated to provide at least on the surfaces thereof a modified, less hydrophilic polymeric structure inhibiting penetration by bacteria and proteins, whereby development of clouding and discoloration of the lens material is significantly retarded.