Patents by Inventor William M. Gregory

William M. Gregory 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).

  • High pressure revamp of low pressure distillate hydrotreating process units
    Patent number: 8424181
    Abstract: A cost effective method for revamping a low pressure distillate hydrotreating process unit to a high pressure distillate hydrotreating process unit. A high pressure hot-feed pump is added, the furnace is retubed for higher pressures, the low pressure reactor is replaced with a high pressure reactor, a high pressure let-down valve is added at the reactor outlet, and the low pressure recycle compressor is replaced with a high pressure recycle compressor.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: April 23, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: William Ernest Lewis, William M. Gregory
  • High pressure revamp of low pressure distillate hydrotreating process units
    Publication number: 20100263185
    Abstract: A cost effective method for revamping a low pressure distillate hydrotreating process unit to a high pressure distillate hydrotreating process unit. A high pressure hot-feed pump is added, the furnace is retubed for higher pressures, the low pressure reactor is replaced with a high pressure reactor, a high pressure let-down valve is added at the reactor outlet, and the low pressure recycle compressor is replaced with a high pressure recycle compressor.
    Type: Application
    Filed: April 15, 2010
    Publication date: October 21, 2010
    Inventors: William Ernest Lewis, William M. Gregory