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. 22, 2000
Filed:
May. 18, 1998
Applicant:
Inventors:
Jennifer Farr, Albion, IN (US);
Michael L Bloczynski, Elkhart, IN (US);
James P Albarella, Granger, IN (US);
Assignee:
Bayer Corporation, Elkhart, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C11D / ;
U.S. Cl.
CPC ...
134-2 ; 510163 ;
Abstract
Disclosed is a method for cleaning optical surfaces, such as those in a urine analyzer, which surfaces come into repeated contact with urine test samples. The method involves contacting the optical surfaces with an aqueous solution of a quaternary ammonium or phosphonium salt, a non-ionic surfactant and a divalent ion.