Patents by Inventor Klaus-Dieter Heppner

Klaus-Dieter Heppner 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 and device for the partial galvanization of surfaces which are conducting or have been made conducting
    Patent number: 4376683
    Abstract: Method and device for the partial galvanization of a surface of a conductive material is disclosed. A flow-on channel and a flow-off channel are positioned at an angle relative to the surface at less than 45.degree. and arranged to direct the electrolyte solution at an angle onto the surface to be treated. The electrolyte is removed at an angle to the surface by the flow-off channel such that on the surface to be treated a substantially laminar flow arises. The flow-on channel and flow-off channel are constructed of a corrosion-resistant material. A metallic anode element is arranged in at least one of the flow-on and flow-off channels adjacent the area to be treated.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: March 15, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hubertus Hellwig, Hans-Joachim Schuster, Klaus-Dieter Heppner
  • Ammonia free palladium electroplating bath using aminoacetic acid
    Patent number: 4242180
    Abstract: An aqueous ammonia-free bath for galvanic deposition of palladium or palladium alloys and a process for using involving the use of aminoacetic acid as the sole complexing agent for palladium or palladium alloys in ammonium free, alkaline aqueous media.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: December 30, 1980
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus-Dieter Heppner, Hans-Joachim Schuster
  • Ammonia free palladium deposition using aminoacetic acid
    Patent number: 4144141
    Abstract: An aqueous bath for galvanic deposition of palladium or palladium alloys and a process for using involving the use of aminoacetic acid as the sole complexing agent for palladium or palladium alloys in ammonium free, alkaline aqueous media.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: March 13, 1979
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Joachim Schuster, Klaus-Dieter Heppner