Patents Examined by James M. Hunter, Jr.
  • Patent number: 5039310
    Abstract: Reaction products in which polyethers are grown from substituted phenol-containing mannich bases have been found to be effective ashless dispersants and detergents for fuels and lubricants.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: August 13, 1991
    Assignee: Mobil Oil Corporation
    Inventors: David A. Blain, Angeline B. Cardis
  • Patent number: 5024984
    Abstract: An oxidative coupling catalyst composition for converting methane to a higher hydrocarbon comprising a mixed oxide of: a) a Group IIIB metal selected from the group consisting of yttrium, scandium and lanthanum; b) a Group IIA metal selected from the group consisting of barium, calcium and strontium; and c) a Group IVA metal selected from the group consisting of tin, lead and germanium and wherein the cationic species are present in the approximate ratio of 1:0.5-3:2-4, respectively, and an improved process employing same.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: June 18, 1991
    Assignee: Amoco Corporation
    Inventors: Mark P. Kaminsky, Mark S. Kleefisch, George A. Huff, Don M. Washecheck, Aileen E. Alvarado-Swaisgood, Mark K. Barr
  • Patent number: 5013467
    Abstract: According to the present invention, oleaginous compositions having improved rust inhibitions properties are provided, which comprise a combination of ashless dispersants, rust inhibitor and oil-soluble copper carboxylate antioxidants, wherein the composition is substantially free of boron.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: May 7, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Malcolm Waddoups
  • Patent number: 5012028
    Abstract: A process for converting a gaseous reactant comprising methane or natural gas to higher molecular weight hydrocarbon products is disclosed which comprises: (1) contacting said gaseous reactant with an oxidative coupling catalyst at a reaction temperature in the range of about 500.degree. C. to about 1100.degree. C. for an effective period of time to form an intermediate product comprising ethane, ethylene or a mixture thereof; and (2) pyrolyzing said intermediate product at a temperature in the range of about 900.degree. C. to about 1500.degree. C. for an effective period of time to form said higher molecular weight hydrocarbon products.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: April 30, 1991
    Assignee: The Standard Oil Company
    Inventors: Victor Gupta, Christopher L. Bodolus, Christos Paparizos, Wilfrid G. Shaw
  • Patent number: 5006270
    Abstract: Mixed resorcinol-hydroxyester borates have been found to be effective multifunctional additives when incorporated into various lubricating media.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: April 9, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Liehpao O. Farng, Andrew G. Horodysky
  • Patent number: 4996174
    Abstract: Process for production of a ceramic material, e.g. a carbide, nitride, boride or silicide, by reacting at least one compound of a metallic or non-metallic element having two or more goups reactive with hydroxyl groups with at least one organic compound having two or more hydroxyl groups to form an oxygen-containing polymeric product, heating the polymeric product to produce a coked product containing carbon and an oxide of the metallic or non-metallic element, and heating the coked product to produce a ceramic maerial, in which the proportion by weight of carbon to the oxide of the metallic or non-metallic element in the coked product is in the range from 50% to 150% of the proportion which is theoretically required to produce the ceramic material.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: February 26, 1991
    Assignee: Imperial Chemical Industries Plc
    Inventors: James D. Birchall, Mary J. Mockford, David R. Stanley
  • Patent number: 4983186
    Abstract: A method for reducing friction loss in flowing hydrocarbon fluids is disclosed. The method comprises adding to the fluid an effective amount of an oil-soluble polyamine and a terpolymer of styrene, alkyl acrylate and a carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid. Related compositions are also disclosed.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: January 8, 1991
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, James C. Chang
  • Patent number: 4983310
    Abstract: Hydrocarbyl thiophosphoric acid-phosphite derived olefin and polymeric olefin adducts are superior as lubricating fluid media with internal synergistic multifunctional antiwear, antioxidant properties, and as multifunctional extreme pressure/antiwear additives for both mineral and synthetic lubricating oils as well as fuels.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: January 8, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Linda A. Benjamin, Andrew G. Horodysky, Derek A. Law, Shi-Ming Wu
  • Patent number: 4981829
    Abstract: This invention relates to a method for the oxidative conversion of methane to ethylene and/or ethane and to a catalyst system for use in the method.In more detail a method for the oxidative conversion of methane to ethylene and/or ethane in which a mixture comprising methane and oxygen is heated to a temperature of from 500.degree. to 1000.degree. C. and the heated mixture is contacted with a catalyst system which comprises a first component which is a non-reducible metal compound and which first component is sufficiently refractory to withstand the operative temperature and a second component which is one or more oxycompounds of boron or phosphorus provided on the surface of the first component.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: January 1, 1991
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Eric Shutt, Andries G. Altena, John W. Jenkins
  • Patent number: 4982039
    Abstract: A method for the conversion of chlorinated organic compounds by gas-phase pyrolysis in a reducing atmosphere to produce hydrogen chloride in the essential absence of chlorinated hydrocarbons.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: January 1, 1991
    Assignee: University of Southern California
    Inventors: Sidney W. Benson, Maia A. Vaisman
  • Patent number: 4978366
    Abstract: A distillate fuel, particularly one which has a high acid number initially or which develops a high acid number as a result of fuel degradation, stabilized with a diaminomethane of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be independently a saturated or unsaturated hydrocarbon group, e.g., alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkenyl, aralkenyl, alkenylaryl, cycloalkenyl and the like or heterocyclyl groups and in which R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 may be joined together to form a five or six member heterocyclyl ring and R.sub.5 may be hydrogen or lower alkyl is disclosed. A method of stabilizing a fuel oil wherein a stabilizing amount of the above-mentioned diaminomethane is incorporated into the fuel oil is also disclosed.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: December 18, 1990
    Assignee: Petrolite Corporation
    Inventor: Jerry J. Weers
  • Patent number: 4976882
    Abstract: Additives for improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the condensation reaction product of alkylated phenol and sulfurizing agent, wherein:(a) the polymer composition has a number average molecular weight of at least about 3,000 and a molecular weight distribution of at least about 1.5;(b) in the alkylated phenol reactant the alkyl groups (i) are essentially linear; (ii) have between 6 and 50 carbon atoms; and (iii) have an average number of carbon atoms between about 12 and 26; and(c) not more than about 10 mole percent of the alkyl groups on the alkylated phenol have less than 12 carbon atoms and not more than about 10 mole percent of the alkyl groups on the alkylated phenol have more than 26 carbon atoms. The additives may also be produced in a branched backbone form in which monomer reactants are copolymerized with certain tri- or tetrafunctional comonomers.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: December 11, 1990
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: David J. Martella, John J. Jaruzelski
  • 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
  • Patent number: 4975214
    Abstract: Magnetic iron oxide containing silicon element is produced in the form of generally octahedral particles having a sharp particle size distribution through a reaction of an aqueous solution of a ferrous salt having a controlled Fe(II)/Fe(III) ratio and containing a silicic compound with a little excess of an alkali, followed by oxidation of the resultant ferrous hydroxide. The magnetic iron oxide particles have an overall content of silicon element of 0.1-1.5 wt. % based on the iron element with the silicon localized at the core of the particles. The magnetic iron oxide particles have uniform surface properties not markedly changed under various conditions and have good dispersibility in a resin.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: December 4, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kiichiro Sakashita, Yasuo Iwahashi
  • Patent number: 4973411
    Abstract: An improved process for the preparation of sulfurized overbased alkaline earth metal phenates comprises steps of:(a) sulfurizing an alkylphenol with a sulfur halide in an alkane solvent;(b) neutralizing the sulfurized alkylphenol with an alkaline earth metal compound in a mixed solvent comprising an alkane and a lower alkanol to produce a sulfurized alkaline earth metal phenate;(c) carbonating said phenate with carbon dioxide to produce an overbased phenate; and(d) filtering and solvent stripping the reaction mixture to recover the phenate product.The products have a high degree of sulfurization with a substantial portion of monosulfide bonds and are substantially free from alkylene oxide residues.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: November 27, 1990
    Assignee: Texaco Inc.
    Inventors: Tze C. Jao, Carl K. Esche, Elzie D. Black, Robert H. Jenkins, Jr.
  • Patent number: 4973786
    Abstract: A process is disclosed for catalytically converting methane to synthesis gas and one or more saturated or unsaturated higher molecular weight hydrocarbons, such as ethane, ethylene, and acetylene. The process employs a homogeneous gas phase hydrogen halide catalyst other than hydrogen fluoride to faciltiate the pyrolytic oxidation of methane. Alternatively the homogeneous gas phase catalyst may consist of a mixture of gaseous hydrogen halide and gaseous halogen, or a halogen gas.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: November 27, 1990
    Inventor: Sankaram B. Karra
  • Patent number: 4971940
    Abstract: A tin-containing composition is provided, the composition having a tin Auger line transition wherein the ratio of the area of the M.sub.5 N.sub.4,5 N.sub.4,5 transition peak at 424.5 eV.+-.leV, having a 6 eV FWHM, to the area of M.sub.4 N.sub.4,5 N.sub.4,5 transition peak at 430.5 eV.+-.1eV is at least 10 to 1. Additional such tin-containing compositions, including catalyst compositions are also provided as are methods for converting feedstock alkanes containing from 1 to 4 carbon atoms to higher molecular weight hydrocarbons using such catalyst compositions.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: November 20, 1990
    Assignee: Amoco Corporation
    Inventors: Mark P. Kaminsky, Mark S. Kleefisch, Gerry W. Zajac
  • Patent number: 4968452
    Abstract: The present invention provides a lubricating oil composition comprising 97 to 60% by weight of mineral oil and 3 to 40% by weight of polyester, said mineral oil having a kinematic viscosity at 100.degree. C. of 2 to 50 centistokes, a pour point of -5.degree. to -30.degree. C., a viscosity index of not less than 80 and % C.sub.A of not more than 3. This lubricating oil composition is suitably used for lubrication of parts including a wet brake and a wet clutch, such as automatic transmissions and tractors.The lubricating oil composition of the present invention has a suitable viscosity at high temperatures and further is low in low temperature viscosity.Furthermore the lubricating oil composition of the present invention is excellent in friction characteristics, oxidation stability and also in seal rubber compatibility.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: November 6, 1990
    Assignee: Idemitsu Kosan Company Limited
    Inventor: Hiromichi Seiki
  • Patent number: 4968453
    Abstract: A synthetic lubricating oil composition which is suitable for lubrication of mechanical super charger, which composition comprises(A) a diester of an aliphatic dibasic acid having 4 to 14 carbon atoms and an alcohol having 4 to 14 carbon atoms, or a mixture thereof, of which viscosity at 100.degree. C. is 2-7 mm.sup.2 /s; and(B) a polyoxyalkylene glycol ether or a polyoxyalkylene glycol ester having 2 to 5 carbon atoms in its alkylene group, or a mixture thereof, of which viscosity at 100.degree. C. is not less than 30 mm.sup.2 /s; and which composition may further comprise(C) an .alpha.-olefin oligomer having a kinematic viscosity at 100.degree. C. of 3-6 mm.sup.2 /s.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: November 6, 1990
    Assignees: Toyota Jidosha Kabushiki Kaisha, TOA Nenryo Kogyo Kabushiki Kaisha
    Inventors: Sadao Wada, Kenyu Akiyama, Michihide Tokashiki
  • Patent number: 4965002
    Abstract: Lubricant additives are produced by reacting an alkoxylated amine, preferably a dialkoxy long chain alkyl amine, such as a propoxylated amine, with a disubstituted organic phosphite, preferably a dialkyl (C.sub.8 -C.sub.30) phosphite. The additives preferably also contain a boron moiety which is reacted with the phosphite and amine, preferably simultaneously in a one step reaction. The additives are particularly useful in metalworking oils and particularly as extreme pressure additives to replace the currently used chlorinated paraffin additives.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: October 23, 1990
    Assignee: Elco Corporation
    Inventors: William T. Brannen, Gerald D. Burt, Randolph A. McDonald