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:
Oct. 12, 2004
Filed:
Nov. 26, 2002
Applicant:
Inventors:
John T. Hachman, Jr., Stockton, CA (US);
James J. Kelly, Oakland, CA (US);
Alan C. West, Tenafly, NJ (US);
Assignee:
Sandia National Laboratories, Livermore, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 2/112 ; C25D 1/700 ;
U.S. Cl.
CPC ...
C25D 2/112 ; C25D 1/700 ;
Abstract
The use of an insulating shield for improving the current distribution in an electrochemical plating bath is disclosed. Numerical analysis is used to evaluate the influence of shield shape and position on plating uniformity. Simulation results are compared to experimental data for nickel deposition from a nickel—sulfamate bath. The shield is shown to improve the average current density at a plating surface.