Patents by Inventor Mark Hagemeister

Mark Hagemeister 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).

  • Utilization of linear alpha olefins in the production of metallocene catalyzed poly-alpha olefins
    Patent number: 9469704
    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: Grant
    Filed: December 22, 2008
    Date of Patent: October 18, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Margaret May-Som Wu
  • Fluid Bed Reactor with Staged Baffles
    Publication number: 20130165724
    Abstract: The invention relates to a process of alkylating aromatic hydrocarbons, and more particularly a process of making paraxylene by alkylation of benzene and/or toluene with methanol and/or dimethyl ether, and to an apparatus for carrying out said process, the improvement comprising staged injection of one of the reactants, with the stages separated by structured packing so as to minimize at least one of gas phase back-mixing, by-pass phenomena, and gas bubble size.
    Type: Application
    Filed: July 25, 2012
    Publication date: June 27, 2013
    Inventors: Lu Han, Rathna P. Davuluri, Christopher G. Smalley, Mark Hagemeister, Masaaki Sugita, Joseph S. Famolaro, Robert G. Tinger
  • Oxidation of hydrocarbons
    Patent number: 8461397
    Abstract: In a process for oxidizing a hydrocarbon to the corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, a reaction medium comprising a hydrocarbon is contacted with an oxygen-containing gas in a reaction zone and in the presence of a catalyst comprising a cyclic imide. During the oxidation process, a portion of the reaction medium is continuously or intermittently removed from the reaction zone, is stripped of water and organic acid impurities and then returned to the reaction zone.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: June 11, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James R. Lattner, Mark Hagemeister, Jon E. R. Stanat, John S. Buchanan, Jihad M. Dakka, Stephen Zushma
  • Oxidation of Hydrocarbons
    Publication number: 20110172466
    Abstract: In a process for oxidizing a hydrocarbon to the corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, a reaction medium comprising a hydrocarbon is contacted with an oxygen-containing gas in a reaction zone and in the presence of a catalyst comprising a cyclic imide. During the oxidation process, a portion of the reaction medium is continuously or intermittently removed from the reaction zone, is stripped of water and organic acid impurities and then returned to the reaction zone.
    Type: Application
    Filed: August 17, 2009
    Publication date: July 14, 2011
    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
    Inventors: James R. Lattner, Mark Hagemeister, Jon E.R. Stanat, John S. Buchanan, Jihad M. Dakka, Stephen Zushma
  • Utilization Of Linear Alpha Olefins In The Production Of Metallocene Catalyzed Poly-Alpha Olefins
    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
  • Fluids having partially hydrogenated substituted styrene linear dimers and method of making same
    Publication number: 20060069212
    Abstract: A basestock that comprises a fully hydrogenated substituted styrene linear dimer; a partially hydrogenated mono-aromatic substituted styrene linear dimer; and a partially hydrogenated di-aromatic substituted styrene linear dimer. A process of producing a basestock that comprises reacting a feed stream that comprises substituted styrene, alcohol, and a dimerization catalyst, in the presence of a solvent, to form a crude slurry of dimerized substituted styrene; and partially hydrogenating the dimerized substituted styrene with hydrogen over a Group VIII catalyst to form a basestock that comprises a fully hydrogenated substituted styrene linear dimer and a partially hydrogenated substituted styrene linear dimer.
    Type: Application
    Filed: August 17, 2005
    Publication date: March 30, 2006
    Inventors: Mark Hagemeister, Thomas Forbus