Patents by Inventor Detlev Nitsche

Detlev Nitsche has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of measuring current density in electroplating baths
    Patent number: 4619740
    Abstract: A method for measuring the density of a current during an electroplating process in an electroplating bath, wherein a voltage is measured by a voltmeter, positioned outside the bath, immediately between the outer surface of the item to be electroplated and the outer surface of an isolated metallic island.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: October 28, 1986
    Assignee: Schering Aktiengesellschaft
    Inventors: Detlev Nitsche, Rolf Rolff
  • System for equalizing current flow in a plurality of branch circuits such as are used in electroplating baths
    Patent number: 4461690
    Abstract: A reference branch circuit includes a voltage divider. Each of at least one regulated branch circuits includes the collector-emitter circuit of a regulating transistor and a measuring resistance. Each regulated branch circuit is associated with a comparator, which compares voltage across the measuring resistance of the corresponding regulated branch circuit to a reference voltage appearing at a reference tap of the voltage divider in the reference branch circuit. Current passing through each regulated branch circuit is regulated to be equal to the current flowing through the reference branch circuit.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: July 24, 1984
    Assignee: Schering AG
    Inventors: Rolf Rolff, Detlev Nitsche