Patents by Inventor Bobby K. Friley

Bobby K. Friley 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).

  • Pitch precursor production by distillation
    Patent number: 5429739
    Abstract: An improved wiped film evaporator (WFE) process for removing low molecular weight species from a hydrocarbyl mixture is disclosed, wherein partial oxidation of a hydrocarbyl mixture precedes the WFE step. Faster rates of distillation are achieved without significant deterioration of hydrocarbyl product properties. Such products can include carbon fiber precursor materials. Similar faster rates are provided by adding higher softening point hydrocarbyl materials with or without prior partial oxidation.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: July 4, 1995
    Assignee: Ashland Inc.
    Inventors: Robert S. Hanks, Bobby K. Friley