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. 10, 1998
Filed:
Jun. 13, 1996
Ipsen Industries International GmbH, Kleve, DE;
Abstract
In a method for controlling the electric current density across a workpiece in a furnace during heat treatment in a plasma an auxiliary electrode with a known surface area is introduced into the furnace. A batch of workpieces is then introduced into the furnace. First a plasma of a neutral gas is generated within the furnace. The total current within the furnace and the current within the auxiliary electrode are measured. The surface area of the workpieces is calculated according to the equation ##EQU1## The auxiliary electrode is then switched off and a material-transmitting plasma is generated. The nominal total electric current for controlling a desired nominal current density is then calculated according to the equation