Patents Represented by Attorney, Agent or Law Firm W. K. Turner
  • Patent number: 6380420
    Abstract: A process for preparing fatty amines by the cross-metathesis of normal alpha olefins and acrylonitrile to form an intermediate fatty acid nitrile which is hydrogenated to the corresponding fatty amine.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: April 30, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: William L. Schinski, Michael S. Driver
  • Patent number: 6228254
    Abstract: A two step sulfur removal comprising a mild hydrotreating step followed by an extraction step reduces the sulfur content in gasoline to a very low level without significantly reducing the octane of the gasoline.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: May 8, 2001
    Assignee: Chevron U.S.A., Inc.
    Inventors: Lawrence W. Jossens, Curtis L. Munson
  • Patent number: 6218591
    Abstract: The present invention relates to new crystalline zeolite SSZ-36 prepared using a cyclic or polycyclic quaternary ammonium cation templating agent.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: April 17, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Stacey I. Zones, Yumi Nakagawa, Susan T. Evans
  • Patent number: 6191076
    Abstract: An esterification process and the products resulting from it which achieves a mixture of secondary esters which are effectively used with invert drilling muds, the process involving the addition of one or more C1-C5 carboxylic acids and one or more C3-C22 olefins in the presence of an acid catalyst.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 20, 2001
    Assignee: Chevron Phillips Chemical Company LC
    Inventor: Jeffery C. Gee
  • Patent number: 6187423
    Abstract: A peroxide treated LLPDE material that can used as a geomembrane liner in land areas storing toxic waste, municipal landfills, leachate or slurry ponds, and other such land containment applications as well as applications in which a strong, non-biodegradable material which is impermeable to air and moisture is needed.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: February 13, 2001
    Assignee: Chevron Phillips Chemical Company LC
    Inventors: Pamela L. Maeger, Terry R. King
  • Patent number: 6159912
    Abstract: A low overbased alkyl phenyl sulfonate prepared by the neutralization of sulfonic acid with a sulfurized high TBN calcium alkylphenate in the absence of chloride and in the absence of additional carboxylic acid.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: December 12, 2000
    Assignee: Chevron Chemical Company LLC
    Inventor: John McDonald
  • Patent number: 6156290
    Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: December 5, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
  • Patent number: 6156850
    Abstract: A polyalkenyl derivative of an unsaturated acidic reagent prepared by the process of reacting a polyalkene having a Mn of at least 300 with an unsaturated acidic reagent at elevated temperatures in the absence of a strong acid until at least 25% of the polyalkene is converted to a polyalkenyl derivative of an unsaturated acidic reagent, continuing the reaction of the polyalkene with an excess of the unsaturated acidic reagent at elevated temperatures in the presence of a strong acid to convert at least some of the unreacted polyalkene to additional polyalkenyl derivative of an unsaturated acidic reagent, and removing the unreacted unsaturated acidic reagent.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: December 5, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: James J. Harrison, William R. Ruhe, Jr.
  • Patent number: 6146431
    Abstract: A polysuccinimide composition is prepared by reacting a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The alkenyl or alkyl substituent of the alkenyl or alkylsuccinic acid derivative has a Mn of from 140 to 3000. The unsaturated acidic reagent copolymer has an average degree of polymerization of from 2 to 20, and is a copolymer of an unsaturated acidic reagent and an olefin having a Mn of at least 1000. The polyamine has at least three nitrogen atoms and has from 4 to 20 carbon atoms.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: November 14, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: James J. Harrison, William R. Ruhe, Jr.
  • Patent number: 6139226
    Abstract: An injection method for feeding a particulate material to a process vessel, including a valve with at least one cavity adapted for receipt of a predetermined volume of particulate and a sweep stream source for providing a sweep stream having flow in a direction generally toward the valve to remove substantially all of the particulate from the cavity of the valve.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Chevon Chemical Company LLC
    Inventors: Kevin W. Lawson, Gary K. Scott, Wendell H. Snelson
  • Patent number: 6124247
    Abstract: The invention relates to the use of an effective quantity of borated compounds having the following general formula I: ##STR1## in which X is S or O, and R is a hydrocarbyl group containing at least 3 carbon atoms, in particular between 3 and 50 carbon atoms and preferably between 3 and 17 carbon atoms, as an additive improving the compatibility of a lubricating oil composition, comprising dispersants containing basic nitrogen atoms, with fluorocarbon elastomers. In a preferred fashion, the compound of general formula I is borated glycerol monooleate and the concentration of the compound of general formula I is such that the % Boron/% basic N ratio of the lubricating composition varies from 0.25 to 5.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: September 26, 2000
    Assignee: Chevron Chemical S.A.
    Inventors: Jacques Cazin, Pierre Tequi, William M. Kleiser, Peter Kleijwegt
  • Patent number: 6117411
    Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: September 12, 2000
    Assignee: California Institute of Technology
    Inventors: Takahiko Takewaki, Mark E. Davis
  • Patent number: 6107450
    Abstract: A succinimide composition is prepared by reacting a mixture of a polyalkenyl derivative, an unsaturated acidic reagent copolymer, and a polyamine under reactive conditions. The polyalkenyl derivative is produced by reacting an unsaturated acidic reagent with a polyalkene in the presence of a strong acid. The unsaturated acidic reagent copolymer is a copolymer of an unsaturated acidic reagent and an olefin.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: August 22, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: James J. Harrison, Anatoli Onopchenko, William R. Ruhe, Jr.
  • Patent number: 6103215
    Abstract: An aluminosilicate zeolite is disclosed which has a silica/alumina mole ratio of about 500 or less and pores with at least one cross-sectional dimension greater than 7.5 Angstroms. Also disclosed is a zeolite comprising a first oxide selected from the group consisting of silicon oxide, germanium oxide and mixtures thereof and a second oxide selected from the group consisting of aluminum oxide, gallium oxide, iron oxide, indium oxide and mixtures of aluminum oxide, boron oxide, gallium oxide, iron oxide, indium oxide, titanium oxide, and vanadium oxide, the zeolite having, after calcination, the X-ray diffraction lines of Table I, and having a mole ratio of the first oxide to the second oxide of about 500 or less. The zeolites are useful in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 15, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cong-Yan Chen
  • Patent number: 6063723
    Abstract: A process is provided for catalyst dehydrogenation of light paraffinic hydrocarbons using a catalyst comprising a noble metal and an intermediate pore size zeolite having a specified alkali content. The catalyst is sulfur tolerant, so that the dehydrogenation process can be carried out in the presence of sulfur or with periodic exposure to sulfur.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: May 16, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 6054629
    Abstract: The present invention relates to a method of using nickel alumina catalyst to isomerize linear alpha olefins substantially completely to linear internal olefins with no significant increase in branch internal olefin content.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: April 25, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: Eduardo J. Baralt, Amy C. King, Carol E. King
  • Patent number: 6022513
    Abstract: Disclosed is a new aluminophosphate composition which is (i) amorphous; (ii) has, on a microlevel, sheets of aluminophosphate as well as spheres. The new composition can be made, in one embodiment, by neutralizing a mixture of aluminum cations and phosphate anions with a base with vigorous mixing including shear forces sufficient to result in the formation of a mixture of sheets and spheres of aluminophosphate on a microlevel.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: February 8, 2000
    Inventors: Theresa A. Pecoraro, Ignatius Y. Chan
  • Patent number: 5745392
    Abstract: A method for compressing seismic data to reduce data storage and transmission requirements applies wavelet transforms to digitized trace sequential data obtained from plural arrays of multiple acoustic sensors. The wavelet transforms are applied in at least three dimensions, and, in the case of underwater exploration, four dimensions. The transformed data is ordered and quantized to increase the number of zero data values, and the quantized data is compressed using rim-length encoding and entropy coding. The entropy coded data is stored for later retrieval or transmitted to a remote location. The retrieved or received data is decompressed, dequantized and inverse wavelet transformed to construct a representation of the original data. The compression can be selected to be in excess of 100:1 to significantly reduce the data storage and transmission requirements without significant degradation of the reconstructed data.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: April 28, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: Raymond A. Ergas, Paul L. Donoho, John Villasenor
  • Patent number: 5591421
    Abstract: The present invention relates to new crystalline zeolite SSZ-41 which comprises oxides of (1) silicon or a mixture of silicon and germanium, and (2) zinc, said zinc being present in an amount from about 2 wt % to about 5 wt % of zinc metal based on the total weight of metals in said zeolite. Zeolite SSZ-41 may also optionally contain oxides of aluminum, iron, gallium or mixtures thereof. Zeolite SSZ-41 has the X-ray diffraction lines of Table I and has an argon adsorption capacity of at least about 0.06 g/g argon at 87.degree. K. Also disclosed are methods of making and using zeolite SSZ-41.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: January 7, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stacey I. Zones
  • Patent number: 5591322
    Abstract: A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 7, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Robert A. Innes, Theresa A. Pecoraro, Donald S. Santilli, James N. Ziemer