Patents by Inventor Robert Holtmann

Robert Holtmann 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).

  • Aqueous size for glass fibers
    Patent number: 4244844
    Abstract: Aqueous compositions for the coating of glass fibers used particularly for textiles, a method of applying these compositions to the fibers, and the fibers themselves are disclosed. The aqueous compositions comprise at least one starch, a non-ionic lubricant, a cationic lubricant, emulsifier and at least one organo-silane from the group made up of the organo-silanes comprising an organic chain of the polyazamide type and of the organo-silanes whose organic chain contains at least one phenyl radical and at least one secondary or tertiary amine group.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: January 13, 1981
    Assignee: Saint-Gobain Industries
    Inventors: Jacques Molinier, Jacques Mahler, Gilbert Bocquet, Bernard de Massey, Robert Holtmann