Patents by Inventor Donald R. Culp

Donald R. Culp 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).

  • Alkylene oxide purification processes and systems
    Patent number: 8845863
    Abstract: Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream from the distillation apparatus located at a top take-off on the distillation apparatus, removing from the distillation apparatus an ethylene oxide stream of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus an aldehyde enriched fraction as a bottom stream from the distillation apparatus, where the aldehyde enriched fraction is fed directly to a glycol reactor.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: September 30, 2014
    Assignee: Dow Technology Investments LLC
    Inventors: Clarence P. Stadlwieser, Bernie B. Osborne, John P. Dever, Harvey E. Andresen, Michael L. Hutchison, Steven R. Osborne, Liping L. Zhang, Michael Habenschuss, Andrew Addie, Donald R. Culp
  • Apparatus and method of monitoring anchored bolts
    Patent number: 4198865
    Abstract: The integrity of attachment of bolts in a substrate such as a wall of a mine is tested by introducing vibratory energy into an exposed end portion of the bolt and ascertaining the vibratory energy absorbed by the bolt and its attachment.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: April 22, 1980
    Assignee: Energy & Minerals Research Co.
    Inventors: William B. Tarpley, Jr., Donald R. Culp