Patents Examined by Shuangyl Abu Ali
  • Ultrafine nepheline syenite
    Patent number: 8864900
    Abstract: A useable particulate nepheline syenite having a grain size to provide an Einlehner Abrasive Value of less than about 100 is described. The particulate nepheline syenite is generally free from agglomeration and moisture free. At least 99% of the nepheline syenite particles have a size less than 10 microns. In practice, the nepheline syenite grain size is less than about 5 microns and the distribution profile of the particulate system is generally 4-5 microns.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: October 21, 2014
    Assignee: Unimin Corporation
    Inventors: Jerry William Janik, Scott Van Remortel