Patents by Inventor Peter C. Walchli

Peter C. Walchli 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: 5374475
    Abstract: The uppermost, porous layer consists of a filler material free plastic material, of which the particles are melted together at their mutual contact areas. This forms capillaries, through which the coloring material is transported downwards. A receiving layer for the respective color material, which penetrates thereinto capillarily by diffusion, is located under the porous upper layer. These two layers lie on a supporting layer.Because during a printing the coloring material is transported capillarily through the uppermost layer to the middle layer, an immediate drying at the surface of the record carrier occurs. A lateral spreading, i.e. running of the coloring material, does not occur. Thus no smudged areas are formed and the pictures are of an excellent brilliancy.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: December 20, 1994
    Assignee: Celfa AG
    Inventor: Peter C. Walchli