Patents by Inventor Ludwig Armbrust

Ludwig Armbrust 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).

  • Paper support carrying anti-adhesive layer
    Patent number: 4049860
    Abstract: This invention relates to an improvement in a paper support for receiving on one side thereof layers of print and/or varnish, in particular for receiving transfer images, the improvement comprising a water-permeable covering layer on the other side containing polyvinyl alcohol, a polysiloxane, and a polyalkyleneglycol wax. The invention also includes an article employing the improved paper support.
    Type: Grant
    Filed: November 17, 1976
    Date of Patent: September 20, 1977
    Assignee: Hoffmann & Engelmann
    Inventors: Ludwig Armbrust, Jurgen Neubert