Patents by Inventor Nadim F. Yaacoub

Nadim F. Yaacoub 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).

  • Dry catalyst feeder for polymerization reactors
    Publication number: 20020034464
    Abstract: A device and method allow a dry catalyst to be delivered to a liquid-filled polymerization reactor, thus avoiding problems associated with catalyst-liquid contact or with undesired addition of gases to the reactor. A quantity of dry catalyst is transferred from a catalyst reservoir maintained under dry conditions to a catalyst chamber. An inert fluid then enters the chamber to flush the catalyst charge toward the reactor. Optional embodiments include means for precontacting the dry catalyst with a modifier and for removing gas from the fluid line.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 21, 2002
    Applicant: EQUISTAR CHEMICALS, L.P.
    Inventors: Thomas A. Glenn, Nadim F. Yaacoub, Joel A. Mutchler, Charles S. Holland, Dennis D. Gottschalk
  • Method of feeding dry catalyst to a polymerization reactor
    Patent number: 6319995
    Abstract: A device and method allow a dry catalyst to be delivered to a liquid-filled polymerization reactor, thus avoiding problems associated with catalyst-liquid contact or with undesired addition of gases to the reactor. A quantity of dry catalyst is transferred from a catalyst reservoir maintained under dry conditions to a catalyst chamber. An inert fluid then enters the chamber to flush the catalyst charge toward the reactor. Optional embodiments include means for precontacting the dry catalyst with a modifier and for removing gas from the fluid line.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: November 20, 2001
    Assignee: Equistar Chemicals, LP
    Inventors: Thomas A. Glenn, Nadim F. Yaacoub, Joel A. Mutchler, Charles S. Holland, Dennis D. Gottschalk
  • METHOD OF FEEDING DRY CATALYST TO A POLYMERIZATION REACTOR
    Publication number: 20010029285
    Abstract: A device and method allow a dry catalyst to be delivered to a liquid-filled polymerization reactor, thus avoiding problems associated with catalyst-liquid contact or with undesired addition of gases to the reactor. A quantity of dry catalyst is transferred from a catalyst reservoir maintained under dry conditions to a catalyst chamber. An inert fluid then enters the chamber to flush the catalyst charge toward the reactor. Optional embodiments include means for precontacting the dry catalyst with a modifier and for removing gas from the fluid line.
    Type: Application
    Filed: August 30, 1999
    Publication date: October 11, 2001
    Inventors: THOMAS A. GLENN, NADIM F. YAACOUB, JOEL A. MUTCHLER, CHARLES S. HOLLAND, DENNIS D. GOTTSCHALK