Patents by Inventor Oskar M. Schmitt

Oskar M. Schmitt 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).

  • Method for the preparation of a fine-grained mixture having hydrophobic properties
    Patent number: 5114475
    Abstract: Preparation of a fine-grained mixture having hydrophobic properties and a grain size substantially less than 0.2 mm and preferable less than 0.1 mm for asphalt-treatment and de-icing, having a hydrophobic component with a hydrophilic component of at least 50% by weight of the mixture and having 55-99.5% by weight of a residual salt which results from the production of glycerol and 45-0.05% by weight of an additive consisting of salts, oxides, hydoxides, and combinations thereof, in the moist condition and at least partially ground with the residual salt, and containing alkali-earth metal or other non-alkali metals as cations.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: May 19, 1992
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Werner Siegmund, deceased, Wilhelm Kamereit, Oskar M. Schmitt, Volker Weidmann, Otto J. Friedrich