Patents by Inventor Paul R. Vander Putten

Paul R. Vander Putten 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: 4076535
    Abstract: Screens for use in screen process printing are prepared by applying a dry emulsion film to a layer of liquid emulsion carried on the outer surface of a screen fabric in such a manner that upon drying, the dry emulsion film and the liquid emulsion layer are coalesced into a unitary emulsion layer which surrounds the screen fabric. The coalesced emulsion layer has a smooth surface which extends a uniform distance above the screen fabric. Screens thus produced are used to prepare photographic stencils for use in screen process printing.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: February 28, 1978
    Assignee: Carnation Company
    Inventor: Paul R. Vander Putten