Patents Represented by Attorney, Agent or Law Firm Andrew B. Griffs
  • Internal loop reactor and Oxo process using same
    Patent number: 7875254
    Abstract: The invention relates to improvements in internal loop reactors. The reactor of the invention is characterized by a plurality of cooling tubes which form the annulus between the riser and the downcomer path of said internal loop reactor. The reactor also provides improvements in hydroformylation reactions using the improved reactor.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: January 25, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Ronald Dean Garton, Matthew Findlay, Krishnan Sankaranarayanan, Arie Van Vliet
  • Conversion of unsaturated chemicals to oligomers
    Patent number: 7626066
    Abstract: An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides and combinations thereof. Preferred catalysts include mixed nickel and molybdenum oxides or mixed cobalt and molybdenum oxides. The process also oligomerizes sulfur compounds so that sulfur containing feedstocks can be treated without deactivating the catalysts.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 1, 2009
    Assignee: ExxonMobil Oil Corporation
    Inventors: Stephen H. Brown, Robert A. Crane, Jr., Robert J. Saxton, William A. Weber
  • Method of producing rigid foams and products produced therefrom
    Patent number: 6506812
    Abstract: A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate-based foam; (b) a polyol-based foam; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate-based foam and the polyol-based foam; and (d) a blowing agent which comprises a high purity cyclopentane product, wherein the high purity cyclopentane product is about 95% or greater pure cyclopentane, and, optionally, (e) water and/or (f) liquid flame retardant.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: January 14, 2003
    Assignee: Exxon Mobil Chemical Patents Inc
    Inventors: Robert H. Blanpied, James Darryl Thornsberry, Steven E. Silverberg, James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Tronze-I Dennis Wu