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:
Mar. 06, 2007
Filed:
May. 27, 2004
Eugene Shalyt, Washington Township, NJ (US);
Michael Pavlov, Fairlawn, NJ (US);
Peter Bratin, Flushing, NY (US);
Alex Kogan, Carlstadt, NJ (US);
Michael James Perpich, Hackensack, NJ (US);
Eugene Shalyt, Washington Township, NJ (US);
Michael Pavlov, Fairlawn, NJ (US);
Peter Bratin, Flushing, NY (US);
Alex Kogan, Carlstadt, NJ (US);
Michael James Perpich, Hackensack, NJ (US);
Abstract
Suppressor and anti-suppressor additives in an acid copper sulfate plating bath are analyzed by the cyclic voltammetric stripping (CVS) method without cleaning or rinsing the cell between the two analyses. The suppressor analysis is performed first and the suppressor concentration in the resulting measurement solution is adjusted to a predetermined value corresponding to full suppression. This fully-suppressed solution is then used as the background electrolyte for the anti-suppressor analysis. This integrated analysis approach provides results comparable to those obtained with cell cleaning and rinsing between the analyses but significantly reduces the analysis time, consumption of expensive chemicals, and quantity of hazardous waste generated.