Patents by Inventor James Edward Zajic

James Edward Zajic 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).

  • Flotation of scheelite from calcite with a microbial based collector
    Patent number: 4046678
    Abstract: Separation of calcite ore from other more valuable minerals such as scheelite (calcium tungstate) is effected by a flotation process in which there is used a flotation aid or frother, and a microbial based collector which is produced by growing a culture or mixture of cultures selected from the genus Pseudomonas and/or the genus Alcaligenes, on a hydrocarbon substrate.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: September 6, 1977
    Inventors: James Edward Zajic, Naim Kosaric