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. 06, 1989
Filed:
Aug. 08, 1988
Applicant:
Inventors:
Lai Ogunbiyi, Gwynedd, PA (US);
Francis X Smith, Walworth, NY (US);
Thomas M Riedhammer, Toms River, NJ (US);
Assignee:
Bausch & Lomb Incorporated, Rochester, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 28 ; 424 78 ; 252106 ; 514635 ;
Abstract
A method of treating a contact lens wherein the lens is contacted with a solution containing a biguanide or water-soluble salt thereof, in combination with a borate buffer system, said biguanide having the formula: ##STR1## wherein n is from 1 to 500, said biguanide being present in an amount from 0.000001 to 0.0003 weight percent.