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:
Jan. 02, 1996
Filed:
Jun. 09, 1994
Applicant:
Inventors:
Karl F Mueller, New York, NY (US);
Michael C Bochnik, Yonkers, NY (US);
Assignee:
Ciba Geigy Corporation, Tarrytown, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525479 ; 528 25 ; 528 26 ; 528 28 ;
Abstract
New styrene-functional polysiloxanes are described which are obtained by reaction of aminoalkyl functional polysiloxanes with styrene isocyanates. The styrene functional urea polysiloxanes have improved hydrolytic stability and are useful, either by themselves or in combination with copolymerizable comonomers, in UV- or heat curable biocompatible and oxygen permeable coatings, films or shaped articles, especially in form of oxygen permeable contact lenses.