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. 28, 1989
Filed:
Dec. 08, 1987
Robert G Rickert, Endwell, NY (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
A method for preparing and maintaining an electroless plating bath. Seeded surfaces include a palladium and tin coating which receives plating from an electroless plating bath. The plating bath conditions are maintained by measuring the open circuit potential of the bath with a potentiostat. The chemical constituent concentration levels are adjusted to a first open circuit potential for the bath. Air is removed from the bath and the open circuit potential increases to a second level representing a bath chemical activity which produces optimum electroless plating on the seeded surfaces. Parts having seeded surfaces are inserted in the bath and a flow of air is re-established in the bath, rendering less negative the open circuit voltage potential during plating of the parts.