Patents Examined by H. M. S. Sneed
  • Patent number: 4857497
    Abstract: A catalyst comprising a silica-containing carrier on which a metal component iron, nickel, or cobalt promoted by zirconium is supported snd, in addition, as promoter a noble metal from Group VIII of the Periodic Table; the promoter cobalt/zirconium catalyst is suitable for the preparation of hydrocarbons from carbon monoxide and hydrogen.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: August 15, 1989
    Assignee: Shell Oil Company
    Inventors: Krijn P. De Jong, Johannes H. E. Glezer, Martin F. M. Post
  • Patent number: 4857295
    Abstract: A process for the manufacture of iodine, in the presence of a catalyst selected from copper, gold, a transition metal or a compound thereof, characterized in that an aqueous solution of an alkali metal iodide is oxidized--with oxygen, air or other oxygen containing gase--in the presence of carbon dioxide (an alkali metal carbonate and/or bicarbonate being thus formed).Iodine is generally obtained by oxidation of alkali metal iodides comping from a natural source, such as those contained in Chilean nitrates or in other salt deposits (sea-water included), or having an industrial origin; in the latter case the alkali metal iodide is generally the effluent of different processes which contemplate iodine recovery for economic reasons.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: August 15, 1989
    Assignee: Montedipe S.p.A.
    Inventors: Giuseppe Paparatto, Guglielmo Gregorio
  • Patent number: 4855523
    Abstract: Novel di(poly-substituted cyclopentadienyl)-allylic uranium complexes can be employed to catalyze the dimerization of propylene to form 4-methyl-1-pentene selectively. The novel catalyst complexes can be prepared from novel di(poly-substituted cyclopentadienyl)-U(IV) monohalo monoallylic complexes.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: August 8, 1989
    Assignee: The Dow Chemical Company
    Inventors: James C. Stevens, William A. Fordyce
  • Patent number: 4855035
    Abstract: A process for abating corrosion caused by ammonium bisulfate in a crude column overhead transfer line operated at a temperature above the nominal aqueous dew point and in contact with a crude oil feed stream containing sulfur oxides, ammonia and a hydrochloric acid neutralizing amine, which process comprises maintaining a chloride level in said crude oil feed stream sufficient to provide a mole ratio of ammonium chloride to ammonium bisulfate of greater than about 20 in said crude column overhead transfer line.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: August 8, 1989
    Assignee: Shell Oil Company
    Inventor: Hans U. Schutt
  • Patent number: 4853106
    Abstract: Delayed coking process in which improved liquid yield is achieved by varying the rate at which the heavy feedstock is fed to the coke drum. Tandem operation of two active coking drums is disclosed which permits feedrate variation without change of load on furnace.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: August 1, 1989
    Assignee: Mobil Oil Corporation
    Inventors: J. Jay Grove, Grant G. Karsner
  • Patent number: 4853110
    Abstract: A process for removing arsenic and/or selenium from carbonaceous materials. The arsenic and/or selenium are separated by reaction with a metal oxide and/or metal sulfide which is itself derived from a metal complex, and organometallic compound and/or a metal salt of an organic acid which is soluble in said carbonaceous fluid and which either decomposes to the corresponding metal oxide and/or metal sulfide or which can be converted to the corresponding metal sulfide or metal oxide. The reaction of the metal oxide and/or metal sulfide with the arsenic and/or selenium is accomplished at a temperature within the range from about 300.degree. F. to about 800.degree. F. preferably from about 500.degree. F. to about 750.degree. F., most preferably from about 680.degree. F. to about 750.degree. F. and in either an inert or reducing atmosphere. Preferably, the conversion is accomplished in a reducing atmosphere and in the presence of molecular hydrogen.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: August 1, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Gopal H. Singhal, Daniel F. Ryan
  • Patent number: 4853337
    Abstract: Crude oil (one of which is a high fouling crude oil) are blended to maintain the incompatible asphaltene thereof below a predetermined level thereby reducing the fouling tendency of the high fouling crude oil. Paraffinic liquids, LPG's, and condensates may also be blended with crude oil, while monitoring and controlling incompatible asphaltenes thereof.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: August 1, 1989
    Assignee: Exxon Chemicals Patents Inc.
    Inventor: Ghazi B. Dickakian
  • Patent number: 4853109
    Abstract: Dibasic carboxylic acids or salts thereof are used to remove metals, particularly calcium and iron, from hydrocarbonaceous feedstocks. An aqueous solution of the acid is used to extract the metals from the feedstock prior to processing. Oxalic acid is the preferred compound.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: August 1, 1989
    Assignee: Chevron Research Company
    Inventor: John G. Reynolds
  • Patent number: 4850378
    Abstract: An improved bath for use in pickling of steel strip manufactured in a hot strip mill. Pickling fluid, usually acid, is supplied to the bath through apertures in the sidewalls of the bath. A plurality of apertures are provided spaced at differing heights from the bottom of the bath so that acid may be supplied to the bath at various fluid depths. Advantageously, the bath comprises downwardly and inwardly sloping surfaces and the outlets of the apertures are elliptical in shape. In this manner the bath accommodates steel strip of varying widths while ensuring addition of acid to the bath adjacent the edges of the steel strip. Improved agitation of the fluid in the bath enhances the throughput speed of steel strip. To further enhance agitation the inlet apertures are arranged to introduce pickling fluid in a direction which so countercurrent to the direction of movement of steel through the bath.
    Type: Grant
    Filed: October 14, 1987
    Date of Patent: July 25, 1989
    Assignee: Nelson Steel
    Inventor: Al Mattiussi
  • Patent number: 4851600
    Abstract: The invention relates to a process for the destruction of waste, like biologically difficult to degrade halogen-, nitrogen-, sulphur-, and/or oxygen containing compounds by thermal hydrogenolysis. The waste materials are heated together with an excess hydrogen and/or hydrogen donor during 1 to 10 sec. to a temperature between 700.degree.-1220.degree. C., followed by quenching the gaseous effluent of the reaction and separating it in a hydrocarbon and hydrogen containing phase and a hydrogen halogenide(s) nitrogen-, sulphur-, and/or oxygen containing compounds containing phase.Preferably the hydrogenolysis is performed in two steps, first during 1-10 sec. at 700.degree.-900.degree. C. and second during 1-10 sec. at 850.degree.-1200.degree. C.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: July 25, 1989
    Assignee: Rijksuniversiteit Leiden
    Inventor: Robert Louw
  • Patent number: 4851398
    Abstract: The invention relates to a method for making a composition which comprises selecting at least one fatty acid or fatty ester compound having an allylic unsaturation of the type --CH.dbd.CH--CH.sub.2 --CH.dbd.CH-- or --CH.dbd.CH--CH.dbd.CH--CH.sub.2 --, adding to said compound a salt of an element having a rhombohedral crystal structure, such as Bi, Hg, As, B, Sb or Sm, to form a mixture, heating said mixture above about 260.degree. C. for a sufficient period of time to incorporate at least about 0.1% by weight of the element into the compound, cooling the mixture, and recovering the incorporated compound as the remaining fluid of the mixture. The invention also relates to the reaction products thus produced along with methods of administering these compositions to a subject to treat abnormal conditions caused mainly by a catabolic imbalance.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: July 25, 1989
    Assignee: Elena Avram
    Inventor: Emanuel Revici
  • Patent number: 4849025
    Abstract: A method is disclosed for decoking a vertical tube reactor. The decoking process involves contacting the coke with an oxidizing substance in the presence of a carrier liquid to oxidize the coke and produce carbon dioxide, water and by-products. The post-oxidation temperature is maintained below the critical temperature of the carrier liquid at the local pressure. The conditions of the coke oxidation are maintained in such a manner as to assure that the by-products are substantially suspended or dissolved in the liquid.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: July 18, 1989
    Assignee: Resource Technology Associates
    Inventors: Richard L. Bain, John R. Larson
  • Patent number: 4849093
    Abstract: In the catalytic processing of aromatic hydrocarbon compounds, a hydrocarbon oil is successively contacted at aromatic saturation conditions with a catalyst in a first reaction zone and contacted at a lower temperature with a second portion of the catalyst in the same reactor or in multiple reactors.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: July 18, 1989
    Assignee: Union Oil Company of California
    Inventors: Dennis A. Vauk, Milan Skripek
  • Patent number: 4849027
    Abstract: A method for using a foamed liquid for cleaning and/or inerting a vessel is described which allows for continuous recycling of the foam and its breakout liquid and gas components into regenerated foam which is continously directed back into the vessel.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: July 18, 1989
    Inventor: Bobby G. Simmons
  • Patent number: 4848321
    Abstract: In the field of automatic boiling in a pan in which the consistency of massecuite is controlled in accordance with method steps, intermittent boiling is used as an effective way to improve the boiling time and quality of products with supplying of appropriate amounts of water or solution into the pan to control the consistency each time it has reached a set value. This invention provides a novel method for controlling the consistency of the massecuite, wherein two curves are established defining the upper limit and lower limit, respectively, of an allowable range of consistency and within which the consistency is maintained, whereby a product of high quality is obtained safely, simply and within a minimum amount of time.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: July 18, 1989
    Assignees: Yokogawa Electric Corporation, Ensuiko Sugar Refining Co., Ltd.
    Inventors: Takehiko Chigusa, Hitoshi Hashimotor, Tsunenori Kawamura, Kazunori Fukushima, Kiyoumi Kurokawa, Masakatsu Miyazaki
  • Patent number: 4847014
    Abstract: A compound of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or ethyl, the A,B,C and D rings optionally have one or more double bonds and are optionally substituted with one or more members of the group consisting of halogen protected hydroxy, 1/8O, alkyl and alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms, R is selected from the group consisting of halogen, --OH, alkoxy of 1 to 6 carbon atoms, aralkoxy of 7 to 15 carbon atoms, alkylthio of 1 to 6 carbon atoms, arylthio of 6 to 14 carbon atoms, aralkylthio of 7 to 15 carbon atoms and ##STR2## wherein R.sub.3 and R.sub.4 are individually selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms and aralkyl of 7 to 15 carbon atoms or R.sub.3 and R.sub.4 together with the nitrogen atom form another heterocycle optionally containing a nitrogen atom or oxygen atom and their preparation and their use to form 20-keto-pregnanes.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: July 11, 1989
    Assignee: Roussel Uclaf
    Inventors: Michel Vivat, Jean Buendia
  • Patent number: 4846959
    Abstract: A process is provided wherein premium fuels are manufactured from a high sulfur, low pour point feed and a low sulfur, high pour point feed. The feeds are treated individually (blocked operation) in a catalytic reactor that desulfurizes or dewaxes the feed, depending on temperature, and the effluents are combined. Since cut point limitations due to sulfur or pour point are removed by the process, yield of a fuel (e.g. jet fuel) is materially enhanced.
    Type: Grant
    Filed: August 18, 1987
    Date of Patent: July 11, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Clinton R. Kennedy, Stuart S. Shih
  • Patent number: 4846963
    Abstract: A coal liquefaction process using ionic liquefaction techniques with polar solvent solubilizing agents and water soluble inorganic compounds, produces a carbonaceous liquefaction product which is separated from the process stream by the use of methanol as a partitioning agent and the methanol and solubilizing agent are recovered separately for reuse.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: July 11, 1989
    Inventors: Curtis L. Knudson, John R. Rindt, Sylvia A. Farnum
  • Patent number: 4846957
    Abstract: Asphaltenes are separated from hydrocarbon oil by bringing the oil into contact with formic acid or a water-soluble organic acid consisting of carbon, hydrogen and oxygen and having at least two functional groups.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: July 11, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Graham R. Johnson, Paul R. Rutter
  • Patent number: 4847403
    Abstract: 2-Isopropyl-2-(2-methylphenyl)-5-(N-methylhomoveratrylamino)-valeronitrile ("mepamil") of the Formula I: ##STR1## preferably administered in the form of water-soluble acid addition salts such as e.g. hydrochloride. The claimed compound is advantageously prepared by alkylation of 2-(2-methylphenyl)-3-methylbutyronitrile with 3,3-diethoxypropylchloride. Subsequently, the obtained 5,5-diethoxy-2-isopropyl-2-(2-Methylphenyl)-valeronitrile is mildly, acidically hydrolisized to yield the appropriate aldehye, i.e. 2-isopropyl-2-(2-methylphenyl)-5-oxovaleronitrile. This aldehyde is then reacted with N-methylhomoveratrylamine under conditions of reductive alkylation, suitably by catalytic hydrogenation over a platinum or palladium catalyst or by chemical reduction with the use of formic acid as a reducing agent. The resulting base is optionally converted by neutralization with a pharmaceutically acceptable organic or inorganic acid, i.e. hydrochloric or fumaric acid, into the corresponding acid addition salt.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: July 11, 1989
    Assignee: Spofa, spojene podniky pro zdravotnickou
    Inventors: Luedvik Blaha, Miroslav Rajsner, Ivan Helfert, Vaclav Trcka