Patents by Inventor Adriaan Wiechers

Adriaan Wiechers 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).

  • Froth flotation process and collector composition
    Patent number: 4211644
    Abstract: A collector composition for use in concentrating metallic mineral ores by froth flotation which comprises a mixture of a mercaptan and an emulsifying or wetting agent adapted to improve the dispersion of the mercaptan into the pulp, and a froth flotation method for concentrating metallic mineral ores wherein the above collector composition is employed as the collector, are disclosed herein.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: July 8, 1980
    Assignee: Pennwalt Corporation
    Inventor: Adriaan Wiechers