Patents by Inventor Dean B. Comstock

Dean B. Comstock 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).

  • Apparatus and process for the separation of solids and liquids
    Patent number: 8962906
    Abstract: A filter column apparatus comprising a filtration zone and a reslurry zone. These zones are separated by a barrier wall or are in substantial cooperation with each other. Also disclosed is a process for separating at least a portion of at least one substantially solid component from a solid-liquid stream comprising the substantially solid component and at least one substantially liquid component. Also disclosed is a process for forming a substantially solids containing packed bed. Also disclosed is a process for purifying paraxylene in a filtration zone.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: February 24, 2015
    Assignee: BP Corporation North America Inc.
    Inventors: Richard A Wilsak, Scott A Roberts, Dean B. Comstock, Ronald D Stefanski
  • Solid-liquid separation process
    Patent number: 8211319
    Abstract: A process for separating solids from liquids in a filtration zone defined by a higher concentration zone and a lower concentration zone separated by a filter. The process includes the steps of directing a slurry feed comprising a liquid and solids into the higher concentration zone, directing a displacement fluid to the higher concentration zone and passing at least a portion of the liquid through a filter to the filtrate zone, producing a filtrate.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: July 3, 2012
    Assignee: BP Corporation North America Inc.
    Inventors: Richard A. Wilsak, Scott A. Roberts, Dean B. Comstock, Ronald Stefanski, George A. Huff
  • Apparatus and Process for the Separation of Solids and Liquids
    Publication number: 20110006008
    Abstract: A filter column apparatus comprising a filtration zone and a reslurry zone. These zones are separated by a barrier wall or are in substantial cooperation with each other. Also disclosed is a process for separating at least a portion of at least one substantially solid component from a solid-liquid stream comprising the substantially solid component and at least one substantially liquid component. Also disclosed is a process for forming a substantially solids containing packed bed. Also disclosed is a process for purifying paraxylene in a filtration zone.
    Type: Application
    Filed: September 20, 2010
    Publication date: January 13, 2011
    Applicant: BP Corporation North America Inc.
    Inventors: Richard A Wilsak, Scott A. Roberts, Dean B. Comstock, Ronald D. Stefanski
  • Apparatus and process for the separation of solids and liquids
    Patent number: 7812206
    Abstract: A filter column apparatus comprising a filtration zone and a reslurry zone. These zones are separated by a barrier wall or are in substantial cooperation with each other. Also disclosed is a process for separating at least a portion of at least one substantially solid component from a solid-liquid stream comprising the substantially solid component and at least one substantially liquid component. Also disclosed is a process for forming a substantially solids containing packed bed. Also disclosed is a process for purifying paraxylene in a filtration zone.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: October 12, 2010
    Assignee: BP Corporation North America Inc.
    Inventors: Richard A. Wilsak, Scott A. Roberts, Dean B. Comstock, Ronald D. Stefanski