Patents Represented by Attorney, Agent or Law Firm R. J. Sheridan
  • 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: 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: 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: 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: 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: 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: 5785944
    Abstract: A method is disclosed for preparing crystalline aluminosilicate Y zeolite from a reaction mixture containing only sufficient water to produce Y zeolite. In one embodiment, the reaction mixture is self-supporting and may be shaped if desired. In the method, the reaction mixture is heated at crystallization conditions and in the absence of an added external liquid phase, so that excess liquid need not be removed from the crystallized product prior to drying the crystals.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: July 28, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 5785945
    Abstract: A method is disclosed for preparing crystalline aluminosilicate zeolite L from a reaction mixture containing only sufficient water to produce zeolite L. In one embodiment, the reaction mixture is self-supporting and may be shaped if desired. In the method, the reaction mixture is heated at crystallization conditions and in the absence of an added external liquid phase, so that excess liquid need not be removed from the crystallized product prior to drying the crystals.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: July 28, 1998
    Assignee: Chevron Chemical Company LLC
    Inventor: Stephen J. Miller
  • Patent number: 5785947
    Abstract: Crystalline zeolites are prepared using a small quantity of an organic templating compound and a larger quantity of an amine component containing at least one amine having from one to eight carbon atoms, ammonium hydroxide, or mixtures thereof.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: July 28, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Yumi Nakagawa
  • Patent number: 5770175
    Abstract: The present invention relates to new crystalline zeolite SSZ-42 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using an organic templating agent selected from the group consisting of N-benzyl-1,4-diazabicyclo?2.2.2!octane cations and N-benzyl-1-azabicyclo?2.2.2!octane cations.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: June 23, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stacey I. Zones
  • Patent number: 5741415
    Abstract: The demercaptanization of petroleum distillates may be carried out by means of the oxidation of the mercaptans contained therein using the oxygen in the air, at a temperature of about 80.degree. to about 220.degree. C., in the presence of about 0.01 to about 10.0 mass % of a water-soluble salt of copper, iron, nickel, or cobalt, on a fibrous carbonaceous material in the form of a woven fabric, felt, rope, or twisted strand, used as a heterogeneous catalyst. The fibrous carbonaceous material used in the process contains oxides of calcium, magnesium, copper, manganese, iron, zinc, and aluminum in an amount of up to about 0.03 mass %.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 21, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: A. M. Mazgarov, A. F. Vildanov, N. G. Bazhirova
  • Patent number: 5716593
    Abstract: A method is disclosed for preparing crystalline aluminosilicate Y-type faujasite from a reaction mixture containing an organic template capable of producing Y-type faujasite. The reaction mixture contains only sufficient water to produce Y-type faujasite. In one embodiment, the reaction mixture is self-supporting and may be shaped if desired. In the method, the reaction mixture is heated at crystallization conditions and in the absence of an added external liquid phase, so that excess liquid need not be removed from the crystallized product prior to drying the crystals.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: February 10, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 5707600
    Abstract: The present invention relates to a process for preparing medium pore size zeolites using small, neutral amines capable of forming the zeolite, the amine containing (a) only carbon, nitrogen and hydrogen atoms, (b) one primary, secondary or tertiary, but not quaternary, amino group, and (c) a tertiary nitrogen atom, at least one tertiary carbon atom, or a nitrogen atom bonded directly to at least one secondary carbon atom, wherein the process is conducted in the absence of a quaternary ammonium compound.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: January 13, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventors: Yumi Nakagawa, Stacey I. Zones
  • Patent number: 5707601
    Abstract: The present invention relates to a process for preparing zeolites having the MTT crystal structure, such as zeolites SSZ-32 and ZSM-23, using small, neutral amines capable of forming the zeolite, the amine containing (a) only carbon, nitrogen and hydrogen atoms, (b) one primary, secondary or tertiary, but not quaternary, amino group, and (c) a tertiary nitrogen atom, at least one tertiary carbon atom, or a nitrogen atom bonded directly to at least one secondary carbon atom (such as isobutylamine, diisobutylamine, diisopropylamine or trimethylamine), wherein the process is conducted in the absence of a quaternary ammonium compound.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: January 13, 1998
    Assignee: Chevron U.S.A. Inc.
    Inventor: Yumi Nakagawa
  • Patent number: 5693215
    Abstract: A crystalline low-aluminum boron beta zeolite is used for dewaxing hydrocarbonaceous feeds.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: December 2, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Dennis L. Holtermann, Lawrence W. Jossens, Donald S. Santilli, Andrew Rainis, James N. Ziemer
  • Patent number: 5685973
    Abstract: The present invention relates to new crystalline zeolite SSZ-42 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using an organic templating agent selected from the group consisting of N-benzyl-1,4-diazabicyclo?2.2.2!octane cations and N-benzyl-1-azabicyclo?2.2.2!octane cations.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: November 11, 1997
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Andrew Rainis