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:
Sep. 04, 1979
Filed:
Sep. 07, 1976
Applicant:
Inventor:
Stanley Renton, Penkridge, GB;
Assignee:
Albright & Wilson Limited, Oldbury, Warley, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2323 / ; 422 56 ;
Abstract
Aqueous solutions such as chromium plating solutions are tested by contacting the solution with a water permeable medium such as a folded filter paper, causing the solution to diffuse upwardly through the medium and contacting separate portions of the diffusing solution in the medium with a water soluble ferrocyanide salt and with a water soluble iron salt respectively. The test may be performed when a filter paper, whose ends have been impregnated respectively with potassium ferrocyanide and a ferrous salt.