Patents by Inventor Barbara L. Simms

Barbara L. Simms 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).

  • Process for production of high purity silica gel
    Patent number: 5017354
    Abstract: High purity, particulate silica gel is formed by the hydrolysis and condensation of a silicon alkoxide in a non-metal lined tumble dryer. The silica gel is then dried in the tumble dryer, is washed with an aqueous solution to remove trace contaminants, and is dried again to form the particulate product.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: May 21, 1991
    Assignee: Akzo America Inc.
    Inventors: Barbara L. Simms, Chihang R. Chu