Patents by Inventor Heinz Drave

Heinz Drave 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).

  • Enamel frit and a process for two-layer and multi-layer one-fire enamelling
    Patent number: 4430438
    Abstract: The invention relates to a process for two-layer and multi-layer one-bake enamelling, in which saccharides and/or their oxidation, reduction and/or conversion products and/or polyethylene glycol are added during preparation of the ground enamel slip and, optionally, the intermediate enamel slip, the additives containing up to 50 carbon atoms per molecule.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: February 7, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Krist, Heinz Drave, Jozef Luypaert
  • Process for the preparation of zeolite A from kaolin
    Patent number: 4271130
    Abstract: The invention provides a process for the production of zeolite A from kaolin by conversion of the kaolin into meta-kaolin followed by reaction of the meta-kaolin in an aqueous alkaline medium, wherein the conversion of the kaolin into the meta-kaolin is conducted at temperatures of between 700.degree. and 950.degree. C. in the presence of alkaline earth compounds and optionally in the presence of uncolored halides and/or halogens, wherein the process may be conducted under reducing conditions and in the presence of alkali metal compounds.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: June 2, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Robert Endres, Heinz Drave, Manfred Mansmann, Lothar Puppe