Patents by Inventor Regina N. Eng

Regina N. Eng 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).

  • Removal of dissolved silicates from alcohol-silicon direct synthesis solvents
    Patent number: 6090965
    Abstract: Dissolved silanes, silicones and silicates from solvents used in the slurry phase Direct Synthesis of alkoxysilanes are removed by adding a carboxylic acid such as formic acid to generate filterable precipitates and reusable solvent. The solvents are thereby remediated and made suitable for reuse in Direct Synthesis processes. Foaming is reduced with the remediated solvent and silicon conversion rates are higher. The precipitates are easily filtered and retain negligible quantities of solvent.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: July 18, 2000
    Assignee: OSi Specialties, Inc.
    Inventors: Kenrick Martin Lewis, Hua Yu, Regina N. Eng