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. 12, 1983
Filed:
Sep. 28, 1981
Applicant:
Inventor:
David C Yeaw, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436 84 ; 436109 ; 436 53 ; 422 82 ;
Abstract
Colorimetric analysis for the presence or concentration of hexacyanoferrates in an aqueous liquid is carried out by forming a colored indicator compound which is soluble therein. The analysis is based on the use of a cobaltic complex of tris-1,10-phenanthroline or tris-2,2'-bipyridyl as an analytical reagent.