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:
Oct. 29, 1991
Filed:
Jul. 30, 1990
James J Hickey, Palos Heights, IL (US);
William L Adamson, Olympia, WA (US);
Other;
Abstract
A method to continuously measure the level of a water treatment product in boiler feedwater. The product, which includes a copolymer of acrylamide and acrylate and a copolymer of acrylic acid and sodium vinyl sulphonate, is added to the feedwater to prevent the formation of scale in the boiler tubes. The method comprises reacting a sample of the feedwater with a reagent to produce turbidity in the sample and further mixing the newly reacted sample with a portion of previously measured reacted sample. The mixture of previously measured reacted sample and newly reacted sample are then photometrically measured in a pump turbidimeter analyzer to determine the level of product in the feedwater.