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).
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Patent number: 10351505Abstract: 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: GrantFiled: November 3, 2015Date of Patent: July 16, 2019Assignee: ExxonMobil Chemical Patents Inc.Inventors: Athanassios Souvaliotis, Caiguo Gong, Moses O. Jejelowo
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Publication number: 20180334422Abstract: 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: ApplicationFiled: November 3, 2015Publication date: November 22, 2018Inventors: Athanassios Souvaliotis, Caiguo Gong, Moses O. Jejelowo
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Patent number: 7989564Abstract: 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: GrantFiled: April 17, 2008Date of Patent: August 2, 2011Assignee: Univation Technologies, LLCInventors: Donald Ray Loveday, Moses O. Jejelowo, Sun-Chueh Kao
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Patent number: 5616665Abstract: 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: GrantFiled: January 16, 1996Date of Patent: April 1, 1997Assignee: Exxon Chemical Patents, Inc.Inventors: Moses O. Jejelowo, Robert L. Bamberger
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Patent number: 5602217Abstract: 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: GrantFiled: August 16, 1995Date of Patent: February 11, 1997Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5595950Abstract: 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: GrantFiled: November 8, 1995Date of Patent: January 21, 1997Assignee: Exxon Chemical Patents, Inc.Inventors: Vispi R. Sagar, Moses O. Jejelowo
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Patent number: 5536796Abstract: 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: GrantFiled: June 6, 1995Date of Patent: July 16, 1996Assignee: Exxon Chemical CompanyInventors: Moses O. Jejelowo, Robert L. Bamberger
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Patent number: 5516737Abstract: 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: GrantFiled: June 6, 1995Date of Patent: May 14, 1996Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5516861Abstract: 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: GrantFiled: June 6, 1995Date of Patent: May 14, 1996Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5470811Abstract: 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: GrantFiled: February 13, 1995Date of Patent: November 28, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Moses O. Jejelowo, Robert L. Bamberger
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Patent number: 5468702Abstract: 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: GrantFiled: July 7, 1994Date of Patent: November 21, 1995Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5466649Abstract: 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: GrantFiled: October 15, 1993Date of Patent: November 14, 1995Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5422325Abstract: 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: GrantFiled: September 17, 1993Date of Patent: June 6, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Moses O. Jejelowo, Robert L. Bamberger
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Patent number: 5359015Abstract: 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: GrantFiled: February 1, 1994Date of Patent: October 25, 1994Assignee: Exxon Chemical Patents Inc.Inventor: Moses O. Jejelowo
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Patent number: 5281679Abstract: 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: GrantFiled: April 9, 1992Date of Patent: January 25, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Moses O. Jejelowo, Robert L. Bamberger
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Patent number: RE40751Abstract: 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: GrantFiled: March 4, 2005Date of Patent: June 16, 2009Assignee: Univation Technologies, LLCInventors: Moses O. Jejelowo, Sun-Chueh Kao