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:
Apr. 18, 1995
Filed:
Dec. 09, 1991
Applicant:
Inventors:
Harro M von der Haegen, Laufach, DE;
Horst Schafer, Aschaffenburg, DE;
Bernhard Seiferling, Goldbach, DE;
Rolf Siegel, Wurzburg, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02C / ; B05D / ;
U.S. Cl.
CPC ...
3511 / ; 427212 ; 427164 ; 427384 ;
Abstract
The invention relates to a process for rendering contact lenses hydrophilic, which comprises treating a contact lens with a compound of formula I