Patents by Inventor Sameh Rizkallah

Sameh Rizkallah 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 for the polymerization of olefins
    Patent number: 7084216
    Abstract: The present invention relates to a process for homopolymerization of ethylene or copolymerization of ethylene with alpha-olefins by contacting ethylene or ethylene and alpha-olefin with a catalyst composition comprising: (a) a solid catalyst precursor comprising at least one vanadium compound, at least one magnesium compound and a polymeric material or a solid catalyst precursor comprising at least one vanadium compound, at least one further transition metal compound and/or at least one alcohol, at least one magnesium compound and a polymeric material; and (b) a cocatalyst comprising an aluminum compound.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 1, 2006
    Assignee: Saudi Basic Industries Corporation
    Inventors: Akhlaq A. Moman, Khalid Al-Bahily, Atieh Abu-Raqabah, John Ledford, Orass M. Hamed, Raju Raghavan, Sameh Rizkallah
  • Process for the polymerization of olefins
    Publication number: 20050101749
    Abstract: The present invention relates to a process for homopolymerization of ethylene or copolymerization of ethylene with alpha-olefins by contacting ethylene or ethylene and alpha-olefin with a catalyst composition comprising: (a) a solid catalyst precursor comprising at least one vanadium compound, at least one magnesium compound and a polymeric material or a solid catalyst precursor comprising at least one vanadium compound, at least one further transition metal compound and/or at least one alcohol, at least one magnesium compound and a polymeric material; and (b) a cocatalyst comprising an aluminum compound.
    Type: Application
    Filed: January 30, 2002
    Publication date: May 12, 2005
    Inventors: Akhlaq Moman, Khalid Al-Bahily, Atieh Abu-Raqabah, John Ledford, Orass Hamed, Raju Raghavan, Sameh Rizkallah