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. 22, 1987
Filed:
Mar. 18, 1986
Applicant:
Inventors:
Kurt E Heikkila, Shoreview, MN (US);
Rodney K Williams, St. Paul, MN (US);
Russell J Pylkki, Minneapolis, MN (US);
Assignee:
ETD Technology, Inc., Shoreview, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; B01D / ;
U.S. Cl.
CPC ...
73 6 / ; 210656 ; 2101982 ; 422 70 ;
Abstract
An accurate repeatable quantitative determination of the concentration of organic additives, additive breakdown products and organic contaminants in plating baths can be made using a novel high-pressure liquid chromatography apparatus in combination with size exclusion chromatography and total organic carbon analysis.