Patents by Inventor Arno Spange

Arno Spange 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).

  • Dyeing agent compositions based on polypropylene wax
    Patent number: 4235641
    Abstract: Preparations of insoluble colorants, especially pigments, are obtained by distributing the colorant in molten polypropylene wax having a viscosity of 0.5 to 5 Pa.s, determined at 170.degree. C., and an isotactic proportion of 40 to 90% by weight. These preparations are easily dispersible in polyolefins and especially useful for dyeing polypropylene in the mass.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: November 25, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Manfred Engelmann, Karl Maier, Arno Spange, Bernd Dewald, Hans-Joachim Lenz, Wolfgang Teige
  • Dyestuff composition for the dyeing or printing of cellulose fiber materials
    Patent number: 4088441
    Abstract: A dyestuff composition for the dyeing or printing of natural or regenerated cellulose fiber materials, consisting of 20 to 70 percent by weight of C.I. Reactive Blue 19 (sodium salt), anthraquinone-2-sulfonic acid (sodium salt), a condensation product of naphthalene-sulfonic acid with formaldehyde (sodium salt), a condensed phosphate (sodium salt), preferably sodiumhexametaphosphate or penta-sodiumtriphosphate, and a dust preventing agent.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: May 9, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Fritz Meininger, Walter Noll, Arno Spange