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. 10, 2001
Filed:
Mar. 26, 1999
Steven R. Ciota, Downers Grove, IL (US);
John E. Hoots, St. Charles, IL (US);
Nalco Chemical Company, Naperville, IL (US);
Abstract
A method for measuring the concentration of an anionically charged polymer in an aqueous solution is described and claimed. The method requires a reagent solution that is also described and claimed. The reagent solution comprises water, Nile Blue Dye and chelant, with the chelant being selected from the group consisting of the alkali metal or ammonium salts of phosphonobutane tricarboxylic acid. The method involves using absorbance measurements to determine the amount of anionically charged polymer present in an aqueous sample. The method is very rapid and thus is very useful under field conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile