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. 14, 1992
Filed:
Feb. 06, 1991
Applicant:
Inventor:
Roger D Moulton, The Woodlands, TX (US);
Assignee:
Betz Laboratories, Inc., Trevose, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; C23F / ; L23F / ;
U.S. Cl.
CPC ...
436 96 ; 422 13 ; 422 16 ; 422 53 ;
Abstract
An improved method of electroanalytical detection of residual hydroquinone in boiler feedwater employing adding an ionic base and a copper chelant to the feedwater sample. Na.sub.3 PO.sub.4 and ethylenediamine are representative chemicals when square wave voltammetry (SWV) is used as the electroanalytical technique.