Patents by Inventor Klaus Grah

Klaus Grah 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).

  • Patent number: 4947787
    Abstract: The invention relates to an apparatus for the electrostatic lacquering of printed circuit boards formed with continuous holes as soldering places for connecting wires. The characterizing feature of the apparatus is that the printed circuit boards, continuously conveyed in a suspended position, are lacquered on one side, then turned over, lacquered on the other side, and the two layers of lacquer are then immediately dried simultaneously.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: August 14, 1990
    Inventors: Klaus Grah, Gunter Korsten, Werner Schauf
  • Patent number: 4900580
    Abstract: A process for the electrostatic lacquering of printed circuit boards formed with continuous holes as soldering places for connecting wires. The characterizing feature of the process is that the printed circuit boards, continuously conveyed in a suspended position, are lacquered on one side, then turned over, lacquered on the other side, and the two layers of lacquer are then immediately dried simultaneously. An apparatus for the electrostatic lacquering of printed circuit boards is also disclosed.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: February 13, 1990
    Inventors: Klaus Grah, Gunter Korsten, Werner Schauf
  • Patent number: 4670335
    Abstract: A blanking strip, made of paper or film, for the partial blanking of objects to be electroplated, such as printed circuit boards, coated with an adhesive composition based on a plastomer, a hard resin and a plasticizer.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: June 2, 1987
    Assignee: Beiersdorf Aktiengesellschaft
    Inventor: Klaus Grah
  • Patent number: 4512854
    Abstract: A process for electroplating a printed circuit board utilizing an improved masking tape for partially covering the surfaces of the circuit board is provided. The masking tape comprises a foil-like carrier and a coating consisting of an adhesive material applied to one side of the foil-like carrier. At least one electrical conductor is arranged on the coating of the masking tape and forms a unit therewith. The electrical conductor connects the surfaces to be electroplated of the printed circuit board with one another and with a frame carried by the printed circuit board.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: April 23, 1985
    Assignee: Beiersdorf AG
    Inventor: Klaus Grah