Patents by Inventor Elsbeth R. Lokey

Elsbeth R. Lokey 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 producing low density gel compositions
    Patent number: 6172120
    Abstract: Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to 0.15 g/cc, and/or a tap density of less than or equal to 0.2 g/cc through contact with at least one esterification agent and at least one catalyst. The processes may be utilized to produce low density gel compositions without the need for a supercritical drying step or thermal treatment.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: January 9, 2001
    Assignee: Cabot Corporation
    Inventors: Douglas M. Smith, William C. Ackerman, Stephen Wallace, Elsbeth R. Lokey