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).

  • Patent number: 10421921
    Abstract: 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: Grant
    Filed: January 30, 2017
    Date of Patent: September 24, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Publication number: 20190264112
    Abstract: 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: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Inventors: Shakeel TIRMIZI, Eduardo BARALT, Liwenny HO, Jason Charles ROSALLO, Jason WELLS, Wui Sum Willbe HO
  • Publication number: 20180119033
    Abstract: 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: Application
    Filed: May 6, 2016
    Publication date: May 3, 2018
    Inventors: Shakeel TIRMIZI, Eduardo BARALT, Liwenny HO, Jason Charles ROSALLI, Jason WELLS, Wui Sum Willbe HO
  • Patent number: 9862906
    Abstract: 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: Grant
    Filed: February 13, 2012
    Date of Patent: January 9, 2018
    Assignee: AMYRIS, INC.
    Inventors: Nicholas Ohler, Karl Fisher, Shakeel Tirmizi
  • Publication number: 20170305819
    Abstract: 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: Application
    Filed: October 20, 2015
    Publication date: October 26, 2017
    Inventors: Jason WELLS, Liwenny HO, Wui Sum Willbe HO, Shakeel TIRMIZI, Eduardo BARALT
  • Publication number: 20170137737
    Abstract: 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: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 9593288
    Abstract: 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: Grant
    Filed: November 18, 2014
    Date of Patent: March 14, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Publication number: 20150252279
    Abstract: 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: Application
    Filed: November 18, 2014
    Publication date: September 10, 2015
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 8921291
    Abstract: 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: Grant
    Filed: July 14, 2006
    Date of Patent: December 30, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Publication number: 20140378720
    Abstract: 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: Application
    Filed: May 6, 2014
    Publication date: December 25, 2014
    Inventors: 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
  • Publication number: 20140221258
    Abstract: 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: Application
    Filed: February 13, 2012
    Publication date: August 7, 2014
    Applicant: AMYRIS, INC.
    Inventors: Nicholas Ohler, Karl Fisher, Shakeel Tirmizi
  • Patent number: 8748361
    Abstract: 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: Grant
    Filed: June 2, 2006
    Date of Patent: June 10, 2014
    Assignee: 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
  • Patent number: 8288594
    Abstract: 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: Grant
    Filed: November 22, 2010
    Date of Patent: October 16, 2012
    Assignee: Albemarle Corporation
    Inventors: Ronald C. Stites, Shakeel Tirmizi, Jerrod Hohman, Stephen Deutch
  • Patent number: 8071835
    Abstract: 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: Grant
    Filed: April 26, 2007
    Date of Patent: December 6, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi
  • Publication number: 20110124927
    Abstract: 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: Application
    Filed: November 22, 2010
    Publication date: May 26, 2011
    Applicant: Range Fuels, Inc.
    Inventors: Ronald C. STITES, Shakeel Tirmizi, Jerrod Hohman, Stephen Deutch
  • Publication number: 20100292424
    Abstract: 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: Application
    Filed: July 14, 2006
    Publication date: November 18, 2010
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 7652185
    Abstract: 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: Grant
    Filed: August 17, 2004
    Date of Patent: January 26, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Norman Yang, Shakeel Tirmizi
  • Publication number: 20090221775
    Abstract: 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: Application
    Filed: December 22, 2008
    Publication date: September 3, 2009
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Shakeel Tirmizi, Margaret May-Som Wu
  • Publication number: 20090005279
    Abstract: 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: Application
    Filed: June 2, 2006
    Publication date: January 1, 2009
    Inventors: 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
  • Publication number: 20080020928
    Abstract: 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: Application
    Filed: April 26, 2007
    Publication date: January 24, 2008
    Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi