Patents Examined by James M. Hunter, Jr.
  • Patent number: 4892680
    Abstract: Synthetic lubricating oils comprising as the main component at least one member selected from the group consisting of specified napthoic acid esters, naphthyl ethers and naphthol esters.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: January 9, 1990
    Assignee: Nippon Oil Co., Ltd.
    Inventor: Noboru Ishida
  • 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
  • Patent number: 4886931
    Abstract: A multi-component oxide catalyst comprising zinc and an alkali metal is described which is useful particularly for converting methane and/or natural gas to higher molecular weight hydrocarbon products such as ethane and ethylene. The catalyst is characterized by the formulaZn.sub.a A.sub.b M.sub.c M'.sub.d O.sub.xwhereinA is Li, Na, K, or mixtures thereof;M is Al, Ga, Cr, La, Y, Sc, V, Nb, Ta, Cu or mixtures thereof;M' is Cs, Rb, Mg, Ca, Sr, Ba, Sm, Pb, Mn, Sb, P, Sn, Bi, Ti, Zr, Hf, or mixtures thereof;a is from about 1 to about 20;b is from about 0.1 to about 20;c is from about 0 to about 5;d is from about 0 to about 20; andx is a number needed to fulfill the valence requirements of the other elements; provided that(i) at least one of c and d is at least 0.1; and(ii) when M' is Sn, c must be at least 0.1.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: December 12, 1989
    Assignee: The Standard Oil Company
    Inventors: Joseph P. Bartek, James F. Brazdil, Jr., John M. Hupp, Robert K. Grasselli
  • Patent number: 4886932
    Abstract: The invention relates to the conversion of methane to higher hydrocarbons by reaction of methane and gaseous oxidant under adiabatic conditions in a thin bed reactor, wherein the hydrocarbon feed contains 1 to 10 wt % C.sub.2.sup.+ alkanes based on methane plus C.sub.2.sup.+ alkanes.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: December 12, 1989
    Assignee: Atlantic Richfield Company
    Inventor: David W. Leyshon
  • Patent number: 4885267
    Abstract: A perovskite ceramic is prepared by separately preliminarily calcining raw material powders of two kinds of perovskite ceramic materials having mutually different compositions to form two kinds of perovskite ceramic materials having respective high dielectric constants and mutually different Curie temperatures, crushing and mixing the calcined materials at an adequate ratio, and sintering the mixed materials without forming a and change complete solid solution thereof. The two kinds of perovskite ceramic materials have the formula Pb(Fe.sub.2/3 W.sub.1/3).sub.x.sbsb.i (Fe.sub.1/2 Nb.sub.1/2).sub.1-x.sbsb.i O.sub.3, wherein in a first kind of perovskite ceramic material i=1 and 0.1.ltoreq.x.sub.1 .ltoreq.0.2, and in a second kind of ceramic perovskite material i=2 and 0.5.ltoreq.x.sub.2 .ltoreq.0.9, the two kinds of perovskite ceramic material coexisting in the mixing ratio 0.5.ltoreq.x.sub.2 /(x.sub.1 +x.sub.2).ltoreq.0.8.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: December 5, 1989
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hideyuki Takahara, Kazuo Kiuchi
  • Patent number: 4883606
    Abstract: The present invention relates to a temper rolling oil which comprises:(A) a water-soluble cationic compound prepared by neutralizing a condensation product obtained by reacting the following compounds 1 to 3 with each other by heating:1. an aliphatic dicarboxylic acid,2. at least one amino compound represented by the following formulae (a) to (c): ##STR1## 3. a particular polyethyleneimine, with an oxoacid of phosphorus, (B) an aqueous rust preventive, and(C) water.The present invention is also concerned with a method of temper rolling which, comprises of conducting temper rolling at a reduction ranging from 0.5 to 30% using a dilute solution prepared by diluting a temper rolling oil of the kind as described above, so that the concentration of a water-soluble cation compound contained therein is 300 to 5,000 ppm.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: November 28, 1989
    Assignees: Nippon Kokan Kabushiki Kaisha, Yushiro Chemical Industry Co., Ltd.
    Inventors: Hiroshi Kuwamoto, Shuichi Iwado, Yoichi Koga, Tomoya Izushi, Toshimi Muto, Nobuomi Kuroi
  • 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
  • Patent number: 4880551
    Abstract: This invention relates to synergistic antioxident compositions consisting of (a) 1-[di(4-octylphenyl)aminomethyl]tolutriazole and (b) an antioxidant selected from the group consisting of methylenebis(di-n-butyldithiocarbamate), 2,6-di-t-butyl-4-sec-butylphenol, 2,6-di-t-butyl-4-methylphenol and butylated phenol mixture and lubricating compositions containing same.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: November 14, 1989
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventor: Lester A. Doe
  • Patent number: 4876409
    Abstract: The invention relates to the conversion of methane to higher hydrocarbons by reaction of methane and gaseous oxidant under adiabatic conditions in a thin bed reactor, and to reactors for carrying out this reaction.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: October 24, 1989
    Assignee: Atlantic Richfield Company
    Inventors: David W. Leyshon, Robert A. Bader
  • Patent number: 4874728
    Abstract: Organophilic clays useful for modifying the rheological properties of organic fluids are made from a smectite type clay, a quaternary ammonium compound and an organosilane.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: October 17, 1989
    Assignee: United Catalyst Inc.
    Inventors: Donald R. Eilliott, Gary W. Beall
  • Patent number: 4873208
    Abstract: Disclosed is a holder for sealing member, in which at least a portion of the holder which comes into contact with the member comprises a sintered body comprising as a main component a non-oxide ceramic of silicon nitride, aluminum nitride, sialon or silicon carbide.By the use of the holder according to this invention, in the hermetic sealing process which is carried out continuously and automatically, an exchange frequency of the holder can be decreased remarkably, and thus a working efficiency on a manufacturing line can be increased. In consequence, the holder according to this invention is industrially very useful, and in particular, it is suitable for the hermetic sealing of the panel pins for cathode ray tubes.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: October 10, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsuhiro Nagata, Tadashi Hayashi, Yoshinobu Hashimoto, Kiyoshi Nakamura
  • Patent number: 4873388
    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: August 13, 1987
    Date of Patent: October 10, 1989
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Eric Shutt, Andries G. Altena, John W. Jenkins
  • Patent number: 4871465
    Abstract: Silver protection in lubricant compositions is afforded by the combination of organo-sulfur compounds and hydrocarbon-substituted 1,2,4-triazoles, the latter being obtained by reaction of a substantially aliphatic, substantially saturated hydrocarbon-substituted dicarboxylic acid with an aminoguanidine compound. The invention is also directed to a method of silver protection utilizing the above combination.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: October 3, 1989
    Assignee: Amoco Corporation
    Inventor: David A. Hutchison
  • Patent number: 4869839
    Abstract: The present invention relates to a cooling fluid for metal cutting, drilling, grinding and other fabricating operations comprising a compound of the formula C.sub.6 H.sub.4 (OH)COOR, where R is selected from the group consisting of --H,--CH.sub.3, --C.sub.2 H.sub.5,--C.sub.3 H.sub.7, and --C.sub.4 H.sub.9, a ketone with a boiling point of at least about 150.degree. F., and an at least partially soluble acid.The present invention also relates to a process and fluid product made by a certain process for cooling tools and workpieces for metal cutting, drilling, grinding and other fabricating operations comprising the steps of mixing a compound of the formula C.sub.6 H.sub.4 (OH)COOR, where R is selected from the group consisting of --H,--CH.sub.3,--C.sub.2 H.sub.5,--C.sub.3 H.sub.7, and --C.sub.4 H.sub.9, a ketone with a boiling point of at least about 150.degree. F.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: September 26, 1989
    Inventors: Linnard Griffin, Darrell Franklin
  • Patent number: 4869837
    Abstract: Process for the preparation of a basic alkaline earth metal salt of a blend of organic carboxylic acids, which comprises(a) preparing a mixture of one equivalent of the blend of organic carboxylic acids and more than one equivalent of an alkaline earth metal hydroxide and/or oxide in a hydrocarbon solvent;(b) introducing carbon dioxide into the mixture obtained in an amount of at least 0.5 equivalent carbon dioxide per equivalent of excess alkaline earth metal; and(c) removing residual solids, if any, and an aqueous layer, if any, wherebythe blend of organic carboxylic acids comprises an oil-soluble alkyl salicylic acid and one or more hydrocarbon substituted succinic acids or anhydrides, in which the hydrocarbon radical has a number average molecular weight from 120 to 5000.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: September 26, 1989
    Assignee: Shell Oil Company
    Inventors: Gerhard d. van Wijngaarden, Henricus M. J. Brons
  • Patent number: 4865754
    Abstract: An improved overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive and the process for its preparation are disclosed. The overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive comprises the reaction product of an alkaline earth metal compound, sulfur, and an alkylphenol in the presence of a polyhydroxy compound and, an alkaline earth metal alkylbenzene sulfonate wherein the reaction mixture is carbonated with carbon dioxide. A lubricating oil composition comprising a major amount of a lubricating oil as base oil and a minor amount of said overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive demonstrates improved storage at elevated temperatures, improved water tolerance and improved compatibility of the phenate-sulfonate mixture, particularly if water is present.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: September 12, 1989
    Assignee: Amoco Corporation
    Inventor: Yuehsiung Chang
  • Patent number: 4866018
    Abstract: Organophilic clays useful for modifying the rheological properties of organic fluids are made from a smectite type clay, a quaternary ammonium compound and a zirconium-aluminum organic complex.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: September 12, 1989
    Assignee: United Catalyst
    Inventor: Donald R. Elliot
  • Patent number: 4864074
    Abstract: There is provided a process for converting methane to higher molecular weight hydrocarbons. In a first step, methane is contacted with elemental sulfur. In one embodiment, carbon disulfide and hydrogen sulfide are produced from this reaction of methane and sulfur, and this product is, in turn, reacted to form CH.sub.3 SH. In another embodiment, CH.sub.3 SH is formed directly in a one-step reaction of methane and sulfur. This CH.sub.3 SH is then contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbons having two or more carbon atoms.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: September 5, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo
  • Patent number: 4863724
    Abstract: Galenic compositions containing an oral antidiabetic agent and having an improved release of active substance are provided, as well as processes for producing these compositions. The compositions are characterized in that the onset of the activity and the duration of activity are adapted to the particular needs of diabetics with regard to proper control of the metabolism and the associated proper release of insulin. A basic or acidic excipient in a solvent is added to the antidiabetic active substance in a quantity such that the active substance is made soluble, and then a solubilizing agent is added. Polyvinylpyrrolidone is dissolved as carrier in this solution, but the carrier may simultaneously serve as the solubilizing adjuvant. This solution is further processed with other excipients to form pharmaceutical compositions.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: September 5, 1989
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Gottfried Schepky, Rolf Brickl, Eckhard Rupprecht, Andreas Greischel
  • Patent number: 4864073
    Abstract: There is provided a process for converting methane to higher molecular weight hydrocarbons. In a first step, methane is contacted with carbonyl sulfide in the presence of UV light under conditions sufficient to produce CH.sub.3 SH. This CH.sub.3 SH then contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbons having two or more carbon atoms.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: September 5, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo