Patents Examined by Cynthia A. Prezlock
  • Patent number: 4727212
    Abstract: A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with a reducible oxide of Tb. The Tb oxide is preferably combined with an amount of alkali and/or alkaline earth metal which is sufficient to improve the selectivity to higher hydrocarbon products. The oxide is reduced by the contact which is carried at about 500.degree. to 1000.degree. C. Reducible oxides of Tb are regenerated by oxidizing the reduced composition with molecular oxygen. The oxide Tb.sub.4 O.sub.7 is particularly effective in the process.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: February 23, 1988
    Assignee: Atlantic Richfield Company
    Inventor: Anne M. Gaffney
  • Patent number: 4727211
    Abstract: A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with an oxide of Pr. The oxide is reduced by the contact which is carried at about 500.degree. to 1000.degree. C. Reducible oxides of Pr are regenerated by oxidizing the reduced composition with oxygen. The oxide Pr.sub.6 O.sub.11 is particularly effective in the process.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: February 23, 1988
    Assignee: Atlantic Richfield Company
    Inventor: Anne M. Gaffney
  • Patent number: 4727207
    Abstract: The invention relates to a process for converting light hydrocarbon feedstocks such as methane and/or natural gas, to higher molecular weight hydrocarbon products that are more readily handleable and transportable. The process comprises heating a gaseous mixture comprising said light hydrocarbon feedstocks and carbon dioxide at a temperature of at least about 600.degree. C. for a period of time effective to provide said higher molecular weight liquid hydrocarbon product. The invention also relates to the higher molecular weight liquid products obtained by the process of the invention.
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: February 23, 1988
    Assignee: Standard Oil Company
    Inventors: Christos Paparizos, Wilfrid G. Shaw
  • Patent number: 4727205
    Abstract: The invention relates to a process for converting light hydrocarbon feedstocks such as methane and/or natural gas, to higher molecular weight hydrocarbon products that are more readily handleable and transportable. The process comprises heating a gaseous mixture comprising said light hydrocarbon feedstocks and a minor, effective amount of at least one ether or thioether compound at a temperature of at least about 800.degree. C. for a period of time effective to provide said higher molecular weight liquid hydrocarbon product. The invention also relates to the higher molecular weight liquid products obtained by the process of the invention.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: February 23, 1988
    Assignee: The Standard Oil Company
    Inventors: Louis J. Velenyi, Christos Paparizos
  • Patent number: 4724093
    Abstract: A solid lubricant, consisting of solid perfluorocarbons, with linear or substantially linear carbon atoms chain, containing from 10 to 20 carbon atoms and having a value of surface tension ranging from 13 to 15 dyne/cm, is obtained by dimerization or co-dimerization of perfluorocarbonsulphonyl halogenidesC.sub.n F.sub.2n+1 SO.sub.2 X(in which X represents an atom of halogen), having a linear or substantially linear chain of carbon atoms and bearing the --SO.sub.2 X group at one end of the chain, operating at high temperature, with short reaction times, and preferably in the presence of a metal catalyst.The solid perfluorocarbon lubricant can be used, if desired as a mixture with paraffinic wax, on sliding surfaces, particularly consisting of a polymeric material either porous or made porous.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: February 9, 1988
    Assignee: Enichimica Secondaria, S.p.A.
    Inventor: Gian P. Gambaretto
  • Patent number: 4721825
    Abstract: A process for producing xylene from toluene or benzene by the use as a catalyst of a fluorine-containing crystalline aluminosilicate or a fluorine-containing crystalline borosilicate. The specified crystalline silicate catalyst increases the conversion of toluene or benzen and the selectivity of xylene. This catalyst can keep its high catalytic activity for long periods of time during the reaction.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: January 26, 1988
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Sumihiro Oda, Haruhito Sato
  • Patent number: 4721828
    Abstract: A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with a reducible oxide of Fe. The iron oxide is preferably combined with an amount of alkali and/or alkaline earth metal which is sufficient to improve the selectively to higher hydrocarbon products. The oxide is reduced by the contact which is carried at about 500.degree. to 1000.degree. C. Reducible oxides of Fe are regenerated by oxidizing the reduced composition with oxygen. The oxide Fe.sub.3 O.sub.4 is particularly effective in the process. Bulk iron oxides promoted by sodium and/or compounds thereof are particularly preferred contact solids.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: January 26, 1988
    Assignee: Atlantic Richfield Company
    Inventor: Howard P. Withers
  • Patent number: 4720350
    Abstract: A railway diesel crankcase lubricating oil composition for railway diesel engines, containing a mineral lubricating oil, an overbased calcium alkylphenolate and an alkyaryl sulfonate oxidation and corrosion inhibiting amount of a reaction product of alpha-hydroxy omega hydroxy-poly (oxyethylene) poly (oxypropylene) poly (oxyethylene) block copolymer, dibasic acid anhydride and N-alkyl alkylene diamine.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: January 19, 1988
    Assignee: Texaco Inc.
    Inventors: Benjamin H. Zoleski, Rodney L. Sung, Ronald L. O'Rourke
  • Patent number: 4720604
    Abstract: Dehydrogenation catalyst compositions for alkylaromatics and dehydrogenation processes using such catalysts are provided. The catalyst compositions comprise a catalytically active iron compound, e.g., iron oxide; a potassium catalyst promoter, e.g., potassium carbonate; an optional chromium compound stabilizer, e.g., chromic oxide, and a catalyst modifier combination of calcium and bismuth compounds, e.g., calcium oxide and bismuth trioxide. Utilization of particular amounts of calcium and bismuth compounds in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for promoting the selective dehydrogenation of para-ethyltoluene to form para-methylstyrene in improved yields or the selective dehydrogenation of ethylbenzene to form styrene in improved yields.
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: January 19, 1988
    Assignee: Mobil Oil Corporation
    Inventor: Chin-Chiun Chu
  • Patent number: 4720349
    Abstract: Disclosed herein is a high temperature-resistant and abrasion-resistant sliding member of graphite-metal borides showing a friction coefficient of 0.01 to 0.09 and a specific amount of abrasion of 1.0 to 4.0.times.10.sup.-8 mm.sup.2 /kg under the measuring conditions of a load of 20 kg/cm.sup.2 and a sliding velocity of 5 m/min at an atmosphere temperature of 300.degree. C., a bending strength of 230 to 900 kg.f/cm.sup.2 and a Shore hardness of 28 to 45, produced by sintering (a) 70 to 93% by weight of amorphous carbon powder, (b) 5 to 20% by weight of at least one boride of a metal of IVa group, Va group of VIa group of the periodic table and (c) 2 to 10% by weight of powdery natural graphite, powdery Kish graphite or a mixture thereof.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: January 19, 1988
    Assignees: The Agency of Industrial Science and Technology, Oiles Industry Co. Ltd.
    Inventors: Kazuo Kobayashi, Kenji Miyazaki, Tsuyoshi Hagio, Ichitaro Ogawa, Hisayoshi Yoshida, Kazutsugu Kashima, Takashi Tada, Youichirou Hayashi, Wataru Abe
  • Patent number: 4715973
    Abstract: Lubricating oil compositions, prepared by the addition of at least one basic salts comprising polyvalent metal salt of naphthenic acids to at least one hydrocarbon lubricating oil, are stabilized above 140.degree. C. by the addition of at least one polyester, or salt of said polyester. The polyesters lead to marked improvement in stability even when used in low concentrations.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: December 29, 1987
    Assignee: Shell Oil Company
    Inventors: Feike de Jong, Jacob Vermeule
  • Patent number: 4713088
    Abstract: The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the addition of a polymer or copolymer having at least 25 wt. % of n-alkyl groups of average number of carbon atoms from 12 to 14 with no more than 10 wt. % containing more than 14 carbon atoms.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: December 15, 1987
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert D. Tack, Sarah L. Pearce, Albert Rossi
  • Patent number: 4713189
    Abstract: A lubricating oil composition having improved dispersancy and viton seal compatibility. The dispersant being prepared by coupling two polyethyleneamines with an aldehyde and a phenol, followed by conversion to a succinimide. The resulting coupled succinimide is then acylated with glycolic acid to form a glycolated Mannich phenol coupled mono-alkenyl succinimide.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: December 15, 1987
    Assignee: Texaco, Inc.
    Inventors: Theodore E. Nalesnik, Nicholas Benfaremo
  • Patent number: 4713188
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are hydrocarbyl-substituted amides having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: December 15, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4713191
    Abstract: A lubricating oil composition having improved dispersancy. The dispersant being prepared by coupling partially glycolated succinimides with an organic diisocyanate.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: December 15, 1987
    Assignee: Texaco Inc.
    Inventor: Theodore E. Nalesnik
  • Patent number: 4710308
    Abstract: Overbased sulfurized phenates formed by the process comprising contacting at reaction conditions a composition comprising a phenolic compound, sulfur and an alkaline earth metal base selected from the group consisting of calcium, barium, magnesium, and strontium, in an amount insufficient to fully react with the phenolic compound, and contacting the above intermediate composition with an additional amount of alkaline earth metal base and carbon dioxide, wherein the molar ratio of carbon dioxide absorbed to overbasing alkaline earth metal is from about 0.70 to about 0.95.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: December 1, 1987
    Assignee: Amoco Corporation
    Inventor: Richard D. Stauffer
  • Patent number: 4709108
    Abstract: Disclosed is a catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons. More particularly, disclosed is a catalytic process for the conversion of methane to C.sub.2 + hydrocarbons, particularly hydrocarbons rich in ethylene or benzene, or both. The process utilizes a metal-containing catalyst, high reaction temperature of greater than 1000.degree. C., and a high gas hourly space velocity of greater than 3200 hr.sup.-1.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: November 24, 1987
    Assignee: Chevron Research Company
    Inventors: Louis Devries, P. R. Ryason
  • Patent number: 4707285
    Abstract: Solutions of ethylene-propylene copolymers grafted with vinyl containing monomers, maleic anhydride or ethylenically unsaturated acids including functionalized derivatives thereof, reacted with polyols, polyamines and hydroxamines, as well as hydrogenated butadiene or isoprene copolymers, which solutions have haze-forming tendencies in mineral oil and are generally useful as multifunctional lubricating oil additives, are reduced in haze-forming tendencies by treatment with 0.5 to 25 wt. % of an alkyl hydroxy benzene compound, such as nonyl or dodecyl phenol.
    Type: Grant
    Filed: January 16, 1987
    Date of Patent: November 17, 1987
    Assignee: Exxon Research & Engineering Co.
    Inventors: Phillip W. Brewster, Clinton R. Smith
  • Patent number: 4707284
    Abstract: A lube oil and method of making same having improved anti-wear properties is described. The lube oil comprises:A. a basestock;B. a diphenyl carbonate; andC. a metal dialkyldithiophosphate salt.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: November 17, 1987
    Assignee: Exxon Research and Engineering Company
    Inventors: Irwin L. Goldblatt, Harold Shaub
  • Patent number: 4705643
    Abstract: An ashless two-stroke cycle additive is prepared by condensing isostearic acid and tetraethylenepentamine. The additive maintains excellent engine cleanliness and has excellent low-temperature storage stability in a lubricant composition.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: November 10, 1987
    Assignee: Standard Oil Company (Indiana)
    Inventor: Thomas E. Nemo