Patents by Inventor Dick Schmal

Dick Schmal 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: 6500585
    Abstract: Described is a method for manufacturing a bipolar plate for, for instance, a bipolar battery. According to the present invention, a negative plate is manufactured by applying a suitable paste in a metal grid, and a positive plate is manufactured by applying a suitable paste in a metal grid. The pasted plates are formed, and arranged on opposite sides of a suitable platelike substrate. The substrate is thermally pressed, then a surface activating treatment is carried out, and thereafter the substrate is lead-plated. That surface activating treatment can be carried out with a corona or, preferably, a plasma. To ensure a good electrical contact, the substrate can be roughened, and the plates can be pressed against the substrate by utilizing a compressed glass fiber mat.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: December 31, 2002
    Assignee: Nederlandse Organisatie voor toegepastnatuurwetenschappelijk onderzoerk TNO
    Inventors: Machiel Saakes, Dick Schmal, Nitte van Landschoot, Willem Johannes Kolkert