Patents Represented by Attorney, Agent or Law Firm C. J. Caroli
  • Steam foam drive method for enhanced oil recovery
    Patent number: 5042583
    Abstract: A process for the recovery of oil from a petroleum reservoir by improving steam sweep efficiency during steam-flooding, wherein a foaming agent is added to divert steam to unswept zones and the reservoir is penetrated by at least one injection well and at least one production well, which process comprises injecting steam and a surfactant solution into an injection well, while concurrently and separately injecting an additional amount of liquid water into the injection well; and recovering oil from a production well.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: August 27, 1991
    Assignee: Chevron Research and Technology Company
    Inventors: Adrian D'Souza, Francois Friedmann
  • Methods for preparing, group II metal overbased sulfurized alkylphenols
    Patent number: 5024773
    Abstract: The present invention is directed toward a method for preparing Group II metal overbased sulfurized alkylphenols. In particular, the present invention employs a sulfurization catalyst in the preparation of Group II metal overbased sulfurized alkylphenols. Use of a sulfurization catalyst in this preparation results in a product generally characterized as having lower crude sediment, a higher Total Base Number and lower viscosity than a similar product prepared without using a sulfurization catalyst.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: June 18, 1991
    Assignee: Chevron Research Company
    Inventor: Thomas V. Liston
  • Long chain aliphatic hydrocarbyl amine additives having an oxyalkylene hydroxy connecting group
    Patent number: 4975096
    Abstract: Long chain aliphatic hydrocarbyl amine additives which comprise a long chain aliphatic hydrocarbyl component, an amine component and an oxy-alkylene hydroxy connecting group connecting the aliphatic hydrocarbyl component and amine component are useful as deposit control additives in fuel compositions and as dispersants in lubricating oil compositions.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: December 4, 1990
    Assignee: Chevron Research Company
    Inventor: Thomas F. Buckley, III
  • Methods for preparing, Group II metal overbased sulfurized alkylphenols
    Patent number: 4971710
    Abstract: The present invention is directed toward a method for preparing Group II metal overbased sulfurized alkylphenols. In particular, the present invention employs a sulfurization catalyst in the preparation of Group II metal overbased sulfurized alkylphenols. Use of a sulfurization catalyst in this peparation results in a product generally characterized as having lower crude sediment, a high Total Base Number and lower viscosity than a similar product prepared without using a sulfurization catalyst.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: November 20, 1990
    Assignee: Chevron Research Company
    Inventor: Thomas V. Liston
  • Detergent grade olefins, alkylbenzenes and alkylbenzene sulfonates and processes for preparing
    Patent number: 4959491
    Abstract: A two-step dimerization process for producing semi-linear C.sub.12 olefins using homogeneous dimerization catalysts and new C.sub.12 olefins mixtures. The C.sub.12 product is especially useful for the production of biodegradable sulfonated alkylaryl detergents and intermediates therefor.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: September 25, 1990
    Assignee: Chevron Research Company
    Inventor: Richard S. Threlkel
  • Lubricating oil compositions containing very long chain alkylphenyl poly (oxyalkylene) aminocarbamates
    Patent number: 4933485
    Abstract: Disclosed are alkylphenyl poly(oxyalkylene) aminocarbamates having at least one basic nitrogen and an average molecular weight of about 800 to 6,000 and wherein the alkyl group contains at least 40 carbon atoms. Also disclosed are lubricating oil compositions and concentrates containing said alkylphenyl poly(oxyalkylene) aminocarbamates.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: June 12, 1990
    Assignee: Chevron Research Company
    Inventor: Thomas F. Buckley, III
  • Lubricating oil compositions containing a combination of a modified succinimide and a Group II metal overbased sulfurized alkylphenol
    Patent number: 4927551
    Abstract: Lubricating oil compositions containing a combination of a polyamino alkenyl or alkyl succinimide modified to contain carbamate functionalities and a Group II metal overbased sulfurized alkylphenol unexpectedly possess little, if any, adverse compatability effects on deposits in diesel engines as compared to lubricating oil compositions containing a combination of an unmodified polyamino alkenyl or alkyl succinimides and a Group II metal overbased sulfurized alkylphenol.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: May 22, 1990
    Assignee: Chevron Research Company
    Inventors: Timothy R. Erdman, Michael A. Shippey, Robert H. Wollenberg
  • Lubricating oil containing hydroperoxidized ethylene copolymers and terpolymers as dispersants and V.I. improvers
    Patent number: 4925579
    Abstract: Lubricating oil compositions containing multifunctional additives, e.g. sludge dispersants and V.I. improvers, and the use of the composition to lubricate the crankcase of an internal combustion engine are disclosed. The additives are prepared by hydroperoxidizing ethylene copolymers and terpolymers.
    Type: Grant
    Filed: October 21, 1982
    Date of Patent: May 15, 1990
    Assignee: Chevron Research Company
    Inventor: Jeffrey E. Stemke
  • Nonionic emulsifier and substituted succinic anhydride compositons therewith
    Patent number: 4915786
    Abstract: An emulsifier comprising the reaction product of a substituted succinic anhydride and a nonionic water-soluble compound having 1 to 3 reactive polar groups. There is also disclosed a stable substituted succinic anhydride/nonionic emulsifier composition, a method for imparting water repellency to surfaces containing groups reactive to anhydrides, and a method for the sizing of paper using said composition.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: April 10, 1990
    Assignee: Chevron Research Company
    Inventor: W. Alan Sweeney
  • Polyalkylenepolyamines as corrosion inhibitors
    Patent number: 4900458
    Abstract: A corrosion inhibiting polyalkylenepolyamine composition comprising a mixture of(a) at least one C-alkyl-ethylene diamine, and(b) at least one di-(C-alkyl)-diethylenetriamine or at least one di-(C-alkyl)-piperazine or a mixture thereof;wherein each C-alkyl group on the ethylene diamine, diethylenetriamine and piperazine independently contains from 10 to 28 carbon atoms. Methods for preparing this composition are also disclosed, as well as methods for its use in inhibiting corrosion of corrodible metals.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: February 13, 1990
    Assignee: Chevron Research Company
    Inventors: Albert H. Schroeder, Ta Y. Ching, Shigeto Suzuki, Kiyoshi Katsumoto
  • Hydroperoxidized ethylene copolymers and terpolymers as dispersants and V. I. improvers
    Patent number: 4891146
    Abstract: Lubricating oil compositions containing multifunctional additives, e.g. sludge dispersants and V.I. improvers, and the use of the composition to lubricate the crankcase of an internal combustion engine are disclosed. The additives are prepared by hydroperoxidizing ethylene copolymers and terpolymers.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: January 2, 1990
    Assignee: Chevron Research Company
    Inventor: Jeffrey E. Stemke
  • Fuel compositions containing very long chain alkylphenyl poly(oxyalkylene) aminocarbonates
    Patent number: 4881945
    Abstract: Disclosed is a fuel composition comprising a hydrocarbon boiling in the gasoline or diesel range and from about 30 to about 5,000 parts per million of a fuel soluble alkylphenyl poly(oxyalkylene) aminocarbamate having at least one basic nitrogen and an average molecular weight of about 800 to 6,000 and wherein the alkyl group contains at least 40 carbon atoms. The instant invention is based on the discovery that use of the unique hydrocarbyl gorup, i.e., an alkylphenyl group wherein the alkyl group contains at least 40 carbon atoms provides for improved lubricating oil compatibility.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: November 21, 1989
    Assignee: Chevron Research Company
    Inventor: Thomas F. Buckley, III
  • Synergistic fuel compositions
    Patent number: 4877416
    Abstract: Disclosed is a synergistic fuel composition containing a hydrocarbyl-substituted amine or polyamine and a poly(oxyalkylene) monool. These compositions provide for an unexpected decrease in those deposits which have been correlated to Octane Requirement Increase (ORI).
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: October 31, 1989
    Assignee: Chevron Research Company
    Inventor: Curtis B. Campbell
  • Process for the oligomerization of alpha olefins and catalyst therefor
    Patent number: 4870041
    Abstract: A process for the preparation of alpha olefin oligomers having predominantly terminal unsaturation using a catalyst system comprising an alkyl aluminum halide component and a second component comprising at least one zirconium compound, preferably in combination with at least one titanium compound. There is also disclosed a catalyst composition for use in this process.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: September 26, 1989
    Assignee: Chevron Research Company
    Inventor: Mary A. White
  • Process for the polymerization of alpha olefins
    Patent number: 4857612
    Abstract: A process for the stereoregular polymerization of alpha olefins which comprises polymerizing an alpha olefin having from 2 to 8 carbon atoms in the presence of a catalyst comprising: (a) a solid supported titanium tetrahalide complex, wherein said complex is prepared by contacting a mechanically pulverized solid support with titanium tetrahalide in the absence of mechanical pulverization, and (b) a cocatalyst comprising a mixture of a dialkyl aluminum halide and a dialkyl magnesium or alkyl lithium compound.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: August 15, 1989
    Assignee: Chevron Research Company
    Inventor: Robert Bacskai
  • Nonionic emulsifier and substituted succinic anhydride compositions therewith
    Patent number: 4849131
    Abstract: A nonionic emulsifier derived from mono-ester reaction products of substituted succinic anhydride. There is also disclosed a stable substituted succinic anhydride/nonionic emulsifier composition, a method for imparting water repellency to surfaces containing groups reactive to anhydrides, and a method for the sizing of paper using said composition.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: July 18, 1989
    Assignee: Chevron Research Company
    Inventor: William A. Sweeney
  • Process for the preparation of alkylaniline using a Friedel-Crafts catalyst
    Patent number: 4843175
    Abstract: A process for the preparation of alkylaniline having from about 10 to 30 carbon atoms in the alkyl substituent which comprises reacting aniline with an olefin having from about 10 to 30 carbon atoms in the presence of a Friedel-Crafts catalyst.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: June 27, 1989
    Assignee: Chevron Research Company
    Inventor: Robert Bacskai
  • Process for the preparation of linear low density polyethylene
    Patent number: 4820786
    Abstract: A process for the preparation of linear low density polyethylene by the copolymerization of ethylene and 1-butene which comprises contacting ethylene with a feedstock comprising 1-butene in the presence of a catalyst comprising:(a) a solid supported titanium tetrahalide complex, wherein said complex is prepared by contacting a mechanically pulverized solid support with titanium tetrahalide in the absence of mechanical pulverization, and(b) a cocatalyst comprising a mixture of dialkyl aluminum halide and a dialkyl magnesium or alkyl lithium compound.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: April 11, 1989
    Assignee: Chevron Research Company
    Inventor: Robert Bacskai
  • Alkylaniline/formaldehyde oligomers as corrosion inhibitors
    Patent number: 4780278
    Abstract: A hydrocarbon-soluble corrosion inhibitor composition comprising the reaction product obtained by the acid-catalyzed oligomerization of an alkylaniline and formaldehyde, wherein the alkylaniline has from 4 to 30 carbon atoms in the alkyl substituent. Also disclosed is a method of inhibiting corrosion of a corrodible metal utilizing said composition.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: October 25, 1988
    Assignee: Chevron Research Company
    Inventors: Robert Bacskai, Albert H. Schroeder
  • Surfactant-containing water thickening polymer
    Patent number: 4780517
    Abstract: A water thickening terpolymer of polymerized units of (A) about 50 to 98 mole percent of acrylamide, (B) about 1.9 to 49.9 mole percent of an alkali metal salt or ammonium salt of acrylic acid, and (C) about 0.1 to 5 mole percent of a copolymerizable ionic surfactant containing (1) an acrylyl or methacrylyl group, (2) a pendant hydrophobic group of 6 to 24 carbon atoms, and (3) an ionic polar group.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: October 25, 1988
    Assignee: Chevron Research Company
    Inventor: Ta Yen Ching