Patents by Inventor Robert S. Hanks

Robert S. Hanks 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
  • Valve cap tamper-proof cover
    Patent number: 4457445
    Abstract: The invention relates to a pilfer-proof cap, for example for a beer container, which comprises two shell portions (4,6) connected by a hinge (8) incorporating a tear-strip, and capable of being secured around the valve of the container by a non-releasable fastening means (14,16). When authorized opening of the container is required, the tab (12) of the tear-strip is pulled away from the cap and releases the valve for use.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: July 3, 1984
    Assignee: P.M. Plasmatic (Leicester) Limited
    Inventors: Robert S. Hanks, Philip H. Brodrick