Patents by Inventor Shakeel Tirmizi
Shakeel Tirmizi 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: 10421921Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluidsType: GrantFiled: January 30, 2017Date of Patent: September 24, 2019Assignee: ExxonMobil Chemical Patents Inc.Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Publication number: 20190264112Abstract: Processes are provided for producing hydrocarbon base oils from alcohols, including by converting one or more alcohols into linear alpha olefins, and then forming branched oligomers with one or more olefin feedstock(s) which are subsequently hydrogenated and fractionated. A process for the preparation of a mixture of branched saturated hydrocarbons can include (a) forming an oligomerization reaction mixture having an oligomerization catalyst system and an olefin monomer mixture, wherein the olefin monomer mixture has an average carbon number in the range of 9.5 to 13, and at least 10% of the olefin monomers in the olefin monomer mixture have a carbon number difference of at least four carbons, (b) oligomerizing the olefin monomers in the oligomerization reaction mixture to produce an oligomer product, (c) separating unreacted olefin monomer from the oligomer product to produce a purified oligomer product, (d) hydrogenating the purified oligomer product, and (e) distilling the hydrogenated oligomer product.Type: ApplicationFiled: May 14, 2019Publication date: August 29, 2019Inventors: Shakeel TIRMIZI, Eduardo BARALT, Liwenny HO, Jason Charles ROSALLO, Jason WELLS, Wui Sum Willbe HO
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Publication number: 20180119033Abstract: Processes are provided for producing hydrocarbon base oils from alcohols, including by converting one or more alcohols into linear alpha olefins, and then forming branched oligomers with one or more olefin feedstock(s) which are subsequently hydrogenated and fractionated. A process for the preparation of a mixture of branched saturated hydrocarbons can include (a) forming an oligomerization reaction mixture having an oligomerization catalyst system and an olefin monomer mixture, wherein the olefin monomer mixture has an average carbon number in the range of 9.5 to 13, and at least 10% of the olefin monomers in the olefin monomer mixture have a carbon number difference of at least four carbons, (b) oligomerizing the olefin monomers in the oligomerization reaction mixture to produce an oligomer product, (c) separating unreacted olefin monomer from the oligomer product to produce a purified oligomer product, (d) hydrogenating the purified oligomer product, and (e) distilling the hydrogenated oligomer product.Type: ApplicationFiled: May 6, 2016Publication date: May 3, 2018Inventors: Shakeel TIRMIZI, Eduardo BARALT, Liwenny HO, Jason Charles ROSALLI, Jason WELLS, Wui Sum Willbe HO
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Patent number: 9862906Abstract: Provided herein are isoparaffins derived from hydrocarbon terpenes such as myrcene, ocimene and farnesene, and methods for making the same. In certain variations, the isoparaffins have utility as lubricant base stocks.Type: GrantFiled: February 13, 2012Date of Patent: January 9, 2018Assignee: AMYRIS, INC.Inventors: Nicholas Ohler, Karl Fisher, Shakeel Tirmizi
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Publication number: 20170305819Abstract: Process for preparing an olefinic product comprising partially hydrogenated ?-farnesene in two stages. In the first stage, reaction conditions are controlled to favor the hydrogenation of ?-farnesene over auto dimerization and polymerization of ?-farnesene. In the second stage, reaction conditions are controlled to favor the hydrogenation of dihydro-?-farnesene and tetrahydro-?-farnesene to form hexahydro-?-hydrofarnesene over the hydrogenation of hexahydro-?-hydrofarnesene to form farnesane.Type: ApplicationFiled: October 20, 2015Publication date: October 26, 2017Inventors: Jason WELLS, Liwenny HO, Wui Sum Willbe HO, Shakeel TIRMIZI, Eduardo BARALT
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Publication number: 20170137737Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluidsType: ApplicationFiled: January 30, 2017Publication date: May 18, 2017Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Patent number: 9593288Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.Type: GrantFiled: November 18, 2014Date of Patent: March 14, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Publication number: 20150252279Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluidsType: ApplicationFiled: November 18, 2014Publication date: September 10, 2015Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Patent number: 8921291Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.Type: GrantFiled: July 14, 2006Date of Patent: December 30, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Publication number: 20140378720Abstract: A process to produce polyalpha-olefins includes contacting a feed stream of at least one alpha-olefin monomer having 4 to 25 carbon atoms with a metallocene catalyst compound and an activator, and optionally an alkyl-aluminum compound, under polymerizations conditions in a reactor. The alpha-olefin monomer is present at 10% volume or more in the reactor and the feed stream includes less than 600 ppm of heteroatom containing compounds. The process further includes obtaining a polyalpha-olefin with at least 50 mole % C5 to C24 alpha-olefin monomer and kinematic viscosity at 100° C. of 5000 cSt or less.Type: ApplicationFiled: May 6, 2014Publication date: December 25, 2014Inventors: Margaret M. Wu, Norman Yang, Lisa S. Baugh, Jo Ann M. Canich, Steven P. Rucker, John F. Walzer, JR., Gordon H. Lee, Frederick Y. Lo, Andrew Jackson, Mark P. Hagemeister, Shakeel Tirmizi, Peijun Jiang, Chia S. Chee
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Publication number: 20140221258Abstract: Provided herein are isoparaffins derived from hydrocarbon terpenes such as myrcene, ocimene and farnesene, and methods for making the same. In certain variations, the isoparaffins have utility as lubricant base stocks.Type: ApplicationFiled: February 13, 2012Publication date: August 7, 2014Applicant: AMYRIS, INC.Inventors: Nicholas Ohler, Karl Fisher, Shakeel Tirmizi
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Patent number: 8748361Abstract: This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)?°5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100° C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)?4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins.Type: GrantFiled: June 2, 2006Date of Patent: June 10, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Margaret May-Som Wu, Lisa Saunders Baugh, Jo Ann Marie Canich, Chia Shian Chee, Mark Paul Hagemeister, Andrew Jackson, Peijun Jiang, Gordon H. Lee, Frederick Yip-Kwai Lo, Steven P. Rucker, Shakeel Tirmizi, John F. Walzer, Jr., Norman Yang
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Patent number: 8288594Abstract: The present invention provides processes for selectively producing ethanol from syngas. In some variations, the process comprises converting biomass-derived syngas to dimethyl ether, carbonylating the dimethyl ether to methyl acetate, hydrogenating the methyl acetate to methanol and ethanol, and recovering the ethanol product. The methanol is preferably recycled by converting to hydrogen and carbon monoxide for introduction back into the process at distinct points. In certain variations of this invention, fresh syngas feed is introduced downstream of the first unit operation in the sequence. High yields of ethanol from biomass can be achieved according to the disclosed processes.Type: GrantFiled: November 22, 2010Date of Patent: October 16, 2012Assignee: Albemarle CorporationInventors: Ronald C. Stites, Shakeel Tirmizi, Jerrod Hohman, Stephen Deutch
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Patent number: 8071835Abstract: The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbent.Type: GrantFiled: April 26, 2007Date of Patent: December 6, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi
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Publication number: 20110124927Abstract: The present invention provides processes for selectively producing ethanol from syngas. In some variations, the process comprises converting biomass-derived syngas to dimethyl ether, carbonylating the dimethyl ether to methyl acetate, hydrogenating the methyl acetate to methanol and ethanol, and recovering the ethanol product. The methanol is preferably recycled by converting to hydrogen and carbon monoxide for introduction back into the process at distinct points. In certain variations of this invention, fresh syngas feed is introduced downstream of the first unit operation in the sequence. High yields of ethanol from biomass can be achieved according to the disclosed processes.Type: ApplicationFiled: November 22, 2010Publication date: May 26, 2011Applicant: Range Fuels, Inc.Inventors: Ronald C. STITES, Shakeel Tirmizi, Jerrod Hohman, Stephen Deutch
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Publication number: 20100292424Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.Type: ApplicationFiled: July 14, 2006Publication date: November 18, 2010Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
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Patent number: 7652185Abstract: A process for reducing boron trifluoride usage and emissions associated with PAO manufacture, the process comprising distilling a portion of the crude PAO product containing a boron trifluoride-organic catalyst at a temperature sufficient to cause the boron trifluoride-organic catalyst to dissociate to produce an overhead stream comprising uncomplexed boron trifluoride and an uncomplexed organic catalyst component, contacting the uncomplexed boron trifluoride and uncomplexed organic catalyst component in a condenser column having an internal structure that increases the recombination of the uncomplexed boron trifluoride and uncomplexed organic catalyst component to form a recycle boron trifluoride-organic catalyst.Type: GrantFiled: August 17, 2004Date of Patent: January 26, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Norman Yang, Shakeel Tirmizi
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Publication number: 20090221775Abstract: The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.Type: ApplicationFiled: December 22, 2008Publication date: September 3, 2009Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Shakeel Tirmizi, Margaret May-Som Wu
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Publication number: 20090005279Abstract: This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)?°5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100° C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)?4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins.Type: ApplicationFiled: June 2, 2006Publication date: January 1, 2009Inventors: Margaret May-Som Wu, Lisa Saunders Baugh, Jo Ann Canich, Chia Shian Chee, Mark Paul Hagemeister, Andrew Jackson, Peijun Jiang, Gordon H. Lee, Frederick Yip-Kwai Lo, Steven P. Rucker, Shakeel Tirmizi, John F. Walzer, JR., Norman Yang
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Publication number: 20080020928Abstract: The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbentType: ApplicationFiled: April 26, 2007Publication date: January 24, 2008Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi