Patents by Inventor Hans G. Schafer

Hans G. Schafer 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).

  • Fuel briquets
    Patent number: 4369042
    Abstract: Fuel briquets containing binding agents and additives are obtained by briquetting of approximately 80 to 99% by weight of an essentially solid fuel, approximately 0.1 to 19% by weight of a natural or synthetic binding agent and approximately 0.1 to 10% by weight, calculated on a dry basis, of a cationic resin obtained by reacting polyamines with halohydrin.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: January 18, 1983
    Assignee: Akzo NV
    Inventors: Hans G. Schafer, Axel Vogts, Gunter Poppel, Horst Schurmann