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. 31, 2000
Filed:
Feb. 17, 1999
Joseph Anthony Abys, Warren, NJ (US);
Joseph John Maisano, Branchburg, NJ (US);
Lars Goran Holmbom, Linkoping, SE;
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
An apparatus for measuring the throwing power of electroplating solutions which provides a nearly linear current density distribution across the panel. The apparatus includes a cylindrical body adapted for rotation about a longitudinal axis thereof, a cylindrical cathode arranged coaxially about a central portion of the cylindrical body, an anode coaxially positioned at a lower end portion of the cylindrical body, a conical shield coaxially arranged around an upper end portion of the cathode; and an annular disk-baffle coaxially arranged around a lower end portion of the cathode. The conical shield and the disk-baffle provide a substantially linear current distribution over the cathode. In another aspect, the invention includes a method for measuring the throwing power of an electrolyte comprising using the instrument of the invention to analyze the variation in the appearance of an electrodeposit over a wide range of current densities along test panel by providing a nearly linear current density distribution across the panel in order to determine optimal electroplating conditions.