Patents by Inventor Thomas Louis De Lellis

Thomas Louis De Lellis 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).

  • Process and apparatus for crystallization of polytrimethylene terephthalate (PTT)
    Patent number: 6984116
    Abstract: Disclosed is a process for reducing the self-adhesiveness of polytrimethylene terephthalate pellets, which can be carried out in a continuous or batch manner comprising the steps of: a) introducing polytrimethylene terephthalate pellets having an intrinsic viscosity of at least about 0.4 dl/g into a conduit containing a liquid which is moving through the conduit, thereby causing the pellets to move through the conduit with the liquid; b) adjusting the temperature of the pellets and the liquid to a temperature of about 50 to about 95° C. for a time sufficient to induce a degree of crystallinity of at least about 35% in the pellets; and c) separating the pellets from the liquid.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: January 10, 2006
    Assignee: Shell Oil Company
    Inventors: James Gao Lee, Thomas Louis De Lellis, Edward James Denton, Kevin Dale Allen, Stefan Deiss, Klaus Mackensen
  • Process and apparatus for crystallization of polytrimethylene terephthalate (PTT)
    Publication number: 20040176565
    Abstract: Disclosed is a process for reducing the self-adhesiveness of polytrimethylene terephthalate pellets, which can be carried out in a continuous or batch manner comprising the steps of:
    Type: Application
    Filed: March 22, 2004
    Publication date: September 9, 2004
    Inventors: James Gao Lee, Thomas Louis De Lellis, Edward James Denton, Kevin Dale Allen, Stefan Deiss, Klaus Mackensen
  • Process and apparatus for crystallization of polytrimethylene terephthalate (PTT)
    Patent number: 6740733
    Abstract: Disclosed is a process for reducing the self-adhesiveness of polytrimethylene terephthalate pellets, which can be carried out in a continuous or batch manner comprising the steps of: a) introducing polytrimethylene terephthalate pellets having an intrinsic viscosity of at least about 0.4 dl/g into a conduit containing a liquid which is moving through the conduit, thereby causing the pellets to move through the conduit with the liquid; b) adjusting the temperature of the pellets and the liquid to a temperature of about 50 to about 95° C. for a time sufficient to induce a degree of crystallinity of at least about 35% in the pellets; and c) separating the pellets from the liquid.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: May 25, 2004
    Assignee: Shell Oil Company
    Inventors: James Gao Lee, Thomas Louis De Lellis, Edward James Denton, Kevin Dale Allen, Stefan Deiss, Klaus Mackensen
  • Process and apparatus for crystallization of polytrimethylene terephthalate (PTT)
    Publication number: 20030109640
    Abstract: Disclosed is a process for reducing the self-adhesiveness of polytrimethylene terephthalate pellets, which can be carried out in a continuous or batch manner comprising the steps of:
    Type: Application
    Filed: November 25, 2002
    Publication date: June 12, 2003
    Inventors: James Gao Lee, Thomas Louis De Lellis, Edward James Denton, Kevin Dale Allen, Stefan Deiss, Klaus Mackensen