Patents Represented by Attorney Susan Abernathy
  • Patent number: 7955498
    Abstract: A method for reducing halide concentration in a hydrocarbon product having an organic halide content which is made by a hydrocarbon conversion process using a halogen-containing acidic ionic liquid catalyst comprising contacting at least a portion of the hydrocarbon product with an aqueous caustic solution under conditions to reduce the halide concentration in the hydrocarbon product is disclosed.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: June 7, 2011
    Assignee: Chevron, U.S.A. Inc.
    Inventors: Michael S. Driver, Saleh A. Elomari, Hye-Kyung C. Timken
  • Patent number: 7569207
    Abstract: A method of preparing a crystalline material, herein designated as SSZ-74, comprising contacting under crystallization conditions (1) a source of silicon oxide, (2) a source of another metal oxide, (3) fluoride ions, and (4) a structure directing agent comprising a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium)dication. A method of preparing a crystalline material having a defined X-ray powder diffraction pattern, by (1) forming a reaction mixture having one or more metal oxides, one being silicon oxide, and a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium)dication, (2) maintaining the reaction mixture at an elevated temperature until crystals are formed, (3) separating the crystalline material, and (4) optionally calcining the crystalline material.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: August 4, 2009
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Allen W. Burton
  • Patent number: 7432402
    Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl N-pyrrolidinium) dication as a structure-directing agent, and processes employing SSZ-74 in a catalyst.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: October 7, 2008
    Assignee: Chevron U.S.A.
    Inventors: Stacey I. Zones, Allen W. Burton, Jr.
  • Patent number: 7282082
    Abstract: Gasses are separated using a molecular sieve having the CHA crystal structure and having a mole ratio of greater than 50 to 1500 of (1) an oxide selected from silicon oxide, germanium oxide or mixtures thereof to (2) an oxide selected from aluminum oxide, iron oxide, titanium oxide, gallium oxide or mixtures thereof.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: October 16, 2007
    Assignee: Chevron USA, Inc.
    Inventor: Lun-Teh Yuen
  • Patent number: 7282134
    Abstract: A process for manufacturing a lubricating base oil by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an is dimerized oil; and d) hydrofinishing said isomerized oil to produce a lubricating base oil having specific desired properties.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 16, 2007
    Assignee: Chevron USA, Inc.
    Inventors: Susan M. Abernathy, David C. Kramer, John M. Rosenbaum, Stephen J. Miller, Russell R. Krug