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:
May. 10, 2005
Filed:
Jun. 13, 2003
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);
ECI Technology, Inc., East Rutherford, NJ (US);
Abstract
The concentration of citrate complexing agent in an electroless cobalt or nickel plating bath is determined by titrating a sample of the electroless plating bath containing a small concentration of free fluoride ion with a standard lanthanum nitrate solution. During the titration, Laion first reacts preferentially with the citrate complexing agent and then with fluoride ion, which reduces the free fluoride ion concentration. The endpoint for the titration is indicated by a substantial decrease in the free fluoride ion concentration, which is detected via a fluoride ion specific electrode (ISE). The method can be used for analysis of other complexing agents.