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:
Jan. 20, 1976
Filed:
Dec. 03, 1973
Applicant:
Inventors:
Edith-Luise Schmeling, Cologne-Dellbruck, DT;
Herbert Friebe, Cologne-Lindenthal, DT;
Ulrich Reininghaus, Cologne-Nippes, DT;
Assignee:
Electro Chemical Engineering GmbH, Zug, Schweiz, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
427-8 ; 118421 ; 118603 ; 427437 ; 427438 ; 427345 ; 427347 ;
Abstract
A method and apparatus for electroless plating of a metal on a workpiece overcomes the problem of metal plating on solid particles suspended in the solution and on those parts of the plating apparatus in contact with the solution by maintaining a concentration of anticatalytic substance, such as lead ions, between about 10.sup.-.sup.6 and 10.sup..sup.-1 mols per liter and maintaining a relative speed of more than about 0.9 meter per second between the solution and those parts of the apparatus in contact with the solution.