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:
Feb. 21, 1995
Filed:
Aug. 03, 1993
Applicant:
Inventors:
Peter Herbrechtsmeier, Konigstein, DE;
Horst Schafer, Aschaffenburg, DE;
Bernhard Seiferling, Goldbach, DE;
Klaus Wenke, Wiesbaden, DE;
Gerhard Wenz, Mainz, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B / ; C08G / ; C02B / ;
U.S. Cl.
CPC ...
523107 ; 524868 ; 525 542 ; 528 15 ; 536-41 ; 536103 ;
Abstract
A process for producing a contact lens and a contact lens comprising a crosslinked lipophilised cyclodextrin derivative, wherein each repeating cyclodextrin unit includes at least one polysiloxane group. The process for producing the contact lens includes the reaction of a cyclodextrin with a polysiloxane.