Patents by Inventor Juha-Pekka Hirvonen

Juha-Pekka Hirvonen 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: 5078848
    Abstract: Procedure and apparatus for the coating of materials. In the procedure the material or substrate (7) is coated by means of a pulsating plasma beam emitted from at least one electrode (1). The plasma beam is accelerated by a magnetic field and deflected by the same to separate the uncharged particles from it, whereupon the plasma beam hits the surface of the material (7) to be coated. The apparatus of the invention for the coating of materials is provided with electrodes (1, 3), at least one voltage source (2) and at least one capacitor (C1) for producing a pulsating plasma beam and at least one deflected coil (4) which generates a magnetic field that accelerates the plasma beam emitted by at least one electrode (1) and deflects the beam to separate the uncharged particles from it.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: January 7, 1992
    Inventors: Asko Anttila, Juha-Pekka Hirvonen, Jari Koskinen