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. 23, 1993
Filed:
Sep. 16, 1991
Applicant:
Inventors:
Tzu-Yu Chen, Naperville, IL (US);
Martin R Godfrey, Naperville, IL (US);
Assignee:
Nalco Chemical Company, Naperville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
20415311 ; 204404 ;
Abstract
An apparatus and method for measuring metal corrosion rate in solutions, including solutions having low ionic strength. Three electrodes including a counterelectrode, a reference electrode, and a working metal electrode are dispossed in close proximity to each other and an ion conducting, but electrically insulating, material is provided between at least the reference and working metal electrodes. The ion conducting material provides a pathway for ions to travel between the electrodes other than through the solution without also creating a short circuit between the elctrodes.