Patents by Inventor Walter Schroer

Walter Schroer 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).

  • Polyurethane casein coating composition
    Patent number: 3943252
    Abstract: Compositions suitable for coating leather or textile materials are provided which compositions are the reaction product of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: March 9, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Schroer, Helmut Reiff, Dieter Dieterich, Karl Berger
  • Polyurethaneamides dispersible in water and dispersions containing them
    Patent number: 3935146
    Abstract: A polyurethaneamide containing ethylene oxide units and adapted to be dispersed in water without added emulsifiers and dispersions containing them are provided. The novel dispersions produce coatings on leather and other substrates having an improved glossy appearance.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: January 27, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Noll, Walter Schroer, Josef Pedain, Helmut Reiff