Patents by Inventor Moses O. Jejelowo

Moses O. Jejelowo 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).

  • Patent number: 10351505
    Abstract: An integrated process for the production of one or more acetylene derivatives is provided. The integrated process includes a) partially oxidizing a hydrocarbon feedstock to produce a partial oxidation mixture comprising H2, CO, and acetylene, b) providing the H2 and CO of the partial oxidation mixture to a collocated methanol production process to produce a methanol-containing effluent; c) providing the methanol-containing effluent to a collocated carbonylation process to produce an acetic acid-containing effluent; and d) providing the acetylene of the partial oxidation mixture and the acetic acid-containing effluent to one or more of the collocated acetylene-derivative processes following: i) a vinyl acetate monomer production process; ii) an oxidation unit for the production of formaldehyde from the methanol-containing effluent; iii) a vinyl chloride monomer production process, and/or iv) a 1,4-butanediol production process.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: July 16, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Athanassios Souvaliotis, Caiguo Gong, Moses O. Jejelowo
  • Publication number: 20180334422
    Abstract: An integrated process for the production of one or more acetylene derivatives is provided. The integrated process includes a) partially oxidizing a hydrocarbon feedstock to produce a partial oxidation mixture comprising H2, CO, and acetylene, b) providing the H2 and CO of the partial oxidation mixture to a collocated methanol production process to produce a methanol-containing effluent; c) providing the methanol-containing effluent to a collocated carbonylation process to produce an acetic acid-containing effluent; and d) providing the acetylene of the partial oxidation mixture and the acetic acid-containing effluent to one or more of the collocated acetylene-derivative processes following: i) a vinyl acetate monomer production process; ii) an oxidation unit for the production of formaldehyde from the methanol-containing effluent; iii) a vinyl chloride monomer production process, and/or iv) a 1,4-butanediol production process.
    Type: Application
    Filed: November 3, 2015
    Publication date: November 22, 2018
    Inventors: Athanassios Souvaliotis, Caiguo Gong, Moses O. Jejelowo
  • Patent number: 7989564
    Abstract: A catalyst system comprising a hafnocene catalyst compound and zirconocene catalyst compound, wherein the hafnocene and/or zirconocene include(s) at least one ligand substituted with at least one linear or iso alkyl group having 3 or more carbon atoms is provided. A process for polymerizing olefin(s) using the same catalyst system is also provided.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: August 2, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Donald Ray Loveday, Moses O. Jejelowo, Sun-Chueh Kao
  • Patent number: 5616665
    Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst able to produce polymers having broader molecular weight distribution and a higher molecular weight. Not only are such polymers easily processable as compared with metallocene polymers produced with other support methods but the methods of this invention provides for a supported catalyst with increased activity.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: April 1, 1997
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Patent number: 5602217
    Abstract: This invention is generally directed toward a catalyst system useful for polymerizing olefins. The method for preparing the catalyst of the invention provides for combining a bulky ligand transition metal catalyst with an activator that has been aged, optionally with a support. The catalyst system is useful in any polymerization process.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: February 11, 1997
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5595950
    Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported bulky ligand transition metal catalyst which when utilized in a polymerization process substantially reduces the reactor fouling and sheeting particularly in a gas phase polymerization process.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: January 21, 1997
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Vispi R. Sagar, Moses O. Jejelowo
  • Patent number: 5536796
    Abstract: The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. The polymer product has a broad molecular weight distribution, a high molecular weight and a narrow composition distribution and is easily processable.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 16, 1996
    Assignee: Exxon Chemical Company
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Patent number: 5516737
    Abstract: This invention is generally directed toward a catalyst system useful for polymerizing olefins. The catalyst system of this invention comprises a supported bulky ligand transition metal compound and a separately supported cocatalyst or activator for the compound.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 14, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5516861
    Abstract: This invention is generally directed toward a catalyst system useful for polymerizing olefins. The catalyst system of this invention comprises a supported bulky ligand transition metal compound and a separately supported cocatalyst or activator for the compound.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 14, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5470811
    Abstract: The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. The polymer product has a broad molecular weight distribution, a high molecular weight and a narrow composition distribution and is easily processable.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: November 28, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Patent number: 5468702
    Abstract: This invention is generally directed toward a catalyst system useful for polymerizing olefins. The method for preparing the catalyst of the invention provides for combining a bulky ligand transition metal catalyst with an activator that has been aged, optionally with a support. The catalyst system is useful in any polymerization process.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: November 21, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5466649
    Abstract: This invention is generally directed toward a catalyst system useful for polymerizing olefins. The catalyst system of this invention comprises a supported bulky ligand transition metal compound and a separately supported cocatalyst or activator for the compound.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: November 14, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5422325
    Abstract: This invention is generally directed toward a supposed catalyst system useful for polymerizing olefins. The method for supposing the catalyst of the invention provides for a supposed metallocene catalyst able to produce polymers having broader molecular weight distribution and a higher molecular weight. Not only are such polymers easily processable as compared with metallocene polymers produced with other support methods but the methods of this invention provides for a supposed catalyst with increased activity.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: June 6, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Patent number: 5359015
    Abstract: An improved catalyst system and process of producing polyolefins having a controllable broadened molecular weight distribution utilizing transition metal metallocene catalyst systems, wherein at least one of the metallocenes has at least one cyclopentadienyl ring being substituted by at least one optionally substituent having a 2.degree. or 3.degree. carbon atom with which it is covalently bonded to the cyclopentadienyl ring. The method for forming the catalyst system of this present invention can be either by a physical or a chemical mixing process.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: October 25, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Moses O. Jejelowo
  • Patent number: 5281679
    Abstract: A catalyst and method of producing polyolefins having broadened molecular weight distributions and enhanced tensile impact strengths utilizing a silica supported metallocene-alumoxane catalyst system, wherein at least one of the metallocenes has at least one cyclopentadienyl ring being substituted by at least one optionally substituted hydrocarbon substituent having a 2.degree. or 3.degree. carbon atom with which it is covalently bonded to the cyclopentadienyl ring.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: January 25, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Patent number: RE40751
    Abstract: The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The hafnocene comprises at least one cyclopentadienyl ligand including at least one linear or isoalkyl substituent of at least 3 carbon atoms.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: June 16, 2009
    Assignee: Univation Technologies, LLC
    Inventors: Moses O. Jejelowo, Sun-Chueh Kao