Patents by Inventor Hans Litwin

Hans Litwin 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).

  • Method of producing a metallic plating
    Patent number: 4038444
    Abstract: A plate or plating comprising a matrix of a thermosetting synthetic resin and, optionally, Portland cement, and particulate metal elements filling the interior interstices of the matrix. The metal elements are bound to the matrix and completely surrounded by the matrix. The plate or plating maybe manufactured by intimately mixing the metal elements with a synthetic resin of low to average viscosity and Portland cement. The resultant viscous mass is placed into a mold or applied to a substrate and hardened in situ.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: July 26, 1977
    Inventors: Erwin Steinhauser, Hans Litwin