Patents Examined by H. M. S. Sneed
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Patent number: 5019367Abstract: A method for producing boehmite, which comprises subjecting aluminum hydroxide dispersed in water to treatment under heat and pressure in the presence of maleic acid and/or malic acid.Type: GrantFiled: March 9, 1990Date of Patent: May 28, 1991Assignees: Mitsubishi Kasei Corporation, Kasei Naoetsu Industries LimitedInventors: Yasuo Oguri, Takao Koga, Toshio Itoh
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Patent number: 5019173Abstract: A method of enchancing the cleanability and facilitating the removal of algae and other microorganisms from surfaces prone to biofouling by immobilizing on said surfaces and bonding thereto a coating of organosilanes, forming on the coated surfaces a layer of dead cells of the algae and other microorganisms, utilizing the layer of dead cells and inherent release characteristics of silicone surface as a release medium to facilitate removal of succeeding layers of algae and other microorganisms that accumulate thereon, and cleaning the surfaces by dislodging the accumulated layers from the release medium layer.Type: GrantFiled: September 29, 1988Date of Patent: May 28, 1991Assignee: Dow Corning CorporationInventors: Richard L. Gettings, James B. McGee, William C. White, Frank Plahutnik, Jr.
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Patent number: 5017539Abstract: A process for preparing a catalyst for the polymerization of butadiene to obtain a polymer containing a very high content of cis isomer in which a specified neodymium carboxylate, an aluminium hydrocarbyl or aluminium hydrocarbyl hydride and a source of halogen are contacted using a particular procedure.Type: GrantFiled: December 22, 1989Date of Patent: May 21, 1991Assignee: Enichem Elastomers Ltd.Inventors: Derek K. Jenkins, Peter J. Ansell
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Patent number: 5017353Abstract: Zeolite L is prepared in a process employing a mother liquor recycle by adjusting the alkalinity of the crystallization gel containing the mother liquor to suppress zeolite W formation and optionally heat treating the mother liquor prior to recycle to remove zeolite W nuclei and/or crystallites. The technique is especially suitable for the formation of zeolite L with cylindrical morphology from a crystallization gel comprising (in mole ratios of oxides):______________________________________ K.sub.2 O/SiO.sub.2 0.22-0.36 H.sub.2 O/K.sub.2 O 25-90 SiO.sub.2 /Al.sub.2 O.sub.3 6-15 ______________________________________The cylindrical Zeolite L may be used as a catalyst base in aromatization of acyclic hydrocarbons with high benzene yields being sustained over commercially feasible periods.Type: GrantFiled: August 5, 1988Date of Patent: May 21, 1991Assignee: Exxon Research and Engineering Co.Inventor: Johannes P. Verduijn
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Patent number: 5013535Abstract: Aluminophosphate-based molecular sieve compositions having the crystal structure of AlPO.sub.4 -54 are stabilized against framework collapse or conversion to other crystal structures by treatment in their hydrated state with boric acid or salts thereof. The stabiized products are characterized, in addition to their essential AlPO.sub.4 -54 structure, by the presence of at least 6 ppm of extraneous boron.Type: GrantFiled: April 20, 1989Date of Patent: May 7, 1991Assignee: UOPInventors: Robert L. Bedard, Robert L. Patton, Stephen T. Wilson
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Patent number: 5008481Abstract: There is provided a process for the aromatization of non-aromatic hydrocarbons having at least six carbon atoms. The non-aromatic feed is contacted with a catalyst which includes a base metal or noble metal which is incorporated into or onto a pillared layered silicate. A preferred pillared layered silicate is kenyaite containing interspathic silica, and a preferred base metal or noble metal is chromium.Type: GrantFiled: December 29, 1989Date of Patent: April 16, 1991Assignee: Mobil Oil CorporationInventors: Ivy D. Johnson, Pochen Chu, Charles T. Kresge
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Patent number: 5008479Abstract: A process for production of 2,6-dimethylnaphthalene is disclosed, comprising the steps: (1) an acylation step where p-tolyl sec-butyl ketone is produced from toluene, n-butene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the p-tolyl sec-butyl ketone is hydrogenated: and (3) a dehydrogenation and cyclization step where the hydrogenated product obtained above is subjected to dehydrogenation and cyclization to produce the desired 2,6-dimethylnaphthalene. The process enables efficiently producing a high quality or high purity 2,6-dimethylnaphthalene.Type: GrantFiled: July 5, 1989Date of Patent: April 16, 1991Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takafumi Abe, Seiji Uchiyama, Takahiro Ojima, Koichi Kida
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Patent number: 5004850Abstract: Blended gasolines are produced by the mixing of a butane-pentane rich component, a natural gasoline component, and a toluene component. The mix is weathered during the blending operation to remove light-weight hydrocarbons comprising two, three and four-carbon components. The light-weight hydrocarbons, which preferably constitute less than 3 percent of the blended gasoline, can be recovered to generate power to run the process. The liquid gasoline mixture is formulated to produce a desired octane rating, an environmentally acceptable vapor pressure, and a mix which, when burned in an internal combustion engine, produces a minimum amount of pollutants.Type: GrantFiled: December 8, 1989Date of Patent: April 2, 1991Assignee: Interstate Chemical, Inc.Inventor: Ewert J. A. Wilson
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Patent number: 5003118Abstract: The benzene content in a gasoline pool is reduced by a process that hydrogenates a benzene-containing isomerization zone feedstream. In addition to reducing the benzene concentration, the hydrogenation zone is also used to heat the isomerization zone feed and thereby eliminate the need for an isomerization zone heater. The process employs mild saturation conditions which eliminates hydrocracking and prevents the loss of isoparaffin yield. Additional cyclic hydrocarbons produced by the saturation of benzene can be processed in the isomerization zone for ring opening to increase the available paraffinic feedstock or the isomerization zone can be operated to pass the cyclic hydrocarbons through to a product recovery section.Type: GrantFiled: December 29, 1989Date of Patent: March 26, 1991Assignee: UOPInventors: Chi-Chu D. Low, Visnja A. Gembicki, Robert S. Haizmann
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Patent number: 5003121Abstract: Alkyl aromatic compounds may be prepared by reacting an aromatic compound with an alkylating agent such as an olefin in the presence of an alkylation catalyst. The alkylation catalyst of the present invention comprises a composite which has been prepared by coextruding a clay component and at least one multi-valent metal component in which the metal is selected from the group consisting of Groups IIIA, IIIB and IVB of the Periodic Table, followed by drying the resultant extrudate and calcination thereof. By utilizing a catalyst which has been prepared by this method in an alkylation reaction it is possible to obtain an improved alkylate selectivity.Type: GrantFiled: August 28, 1989Date of Patent: March 26, 1991Assignee: UOPInventors: Tamotsu Imai, Joseph A. Kocal
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Patent number: 5001118Abstract: Disclosed herein is a method for preventing senescence and increasing bone mass namely, bone volume and bone strength which method comprises administering 24,25-dihydroxy cholecalciferol in a pharmaceutically effective amount, and also use of 24,25-dihydroxy cholecalciferol for preparing anti-senescent compositions and compositions for increasing bone mass.Type: GrantFiled: December 10, 1987Date of Patent: March 19, 1991Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yuji Maeda, Hideyuki Yamato, Toru Hirai, Masanori Ikuzawa, Mikio Matsuki, Masanori Togawa, Eiji Inoguchi, Sinji Nakajima, Tadaaki Kato, Chikao Yoshikumi
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Patent number: 5001294Abstract: Aromatic alkenes, especially diarylbutadienes are produced in a simple economic process by reaction of an anil with an organic compound having a non-aromatic unsaturated system conjugated with an aromatic system, and a terminal methyl group pendent from the non-aromatic unsaturated system; in particular the organic compound is a propenyl-substituted aromatic compound.Type: GrantFiled: October 31, 1988Date of Patent: March 19, 1991Inventor: Allan S. Hay
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Patent number: 4999348Abstract: Cosmetic and pharmaceutical compositions and methods comprising delivery systems for the controlled release and enhanced penetration of biologically active materials (e.g., Vitamin A) to the skin. The delivery systems comprise cholesteric liquid crystals wherein the active material is retained within the lamellar molecular structure (i.e., between the molecular sheets) of the cholesteric liquid crystal.Type: GrantFiled: December 11, 1987Date of Patent: March 12, 1991Assignee: Estee Lauder Inc.Inventors: Gheorghe Cioca, James A. Hayward, Manuel L. Tan, Morris Herstein, Walter P. Smith
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Patent number: 4992610Abstract: A dimer of a lower .alpha.-olefin is prepared by dimerizing a lower .alpha.-olefin in the presence of a catalyst comprising(A) nickel chloride,(B) a trialkylaluminum(C) at least one phosphorus compound selected from the group consisting of compounds of the formulae:PR.sup.1 R.sup.2 R.sup.3 (I)P(NR.sup.1.sub.2).sub.3 (II)andP(OR.sup.1).sub.3 (III)wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and each an alkyl group, a cycloalkyl group or a phenyl group and(D) 1,1,1,3,3,3-hexafluoroisopropanol,wherein the catalyst has improved activity because of the use of nickel chloride as a nickel component, so that the amounts of expensive trialkylaluminum and hexafluoroisopropanol can be decreased and the cost of the catalyst can be significantly reduced.Type: GrantFiled: February 28, 1989Date of Patent: February 12, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroshi Sato, Kenshi Uchida, Hideto Tojima
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Patent number: 4988504Abstract: Certain polysiloxane surface active agents containing radial organic polyether groups provide for improved stability of silicone emulsions, particularly antiperspirant stick compositions.Type: GrantFiled: August 19, 1987Date of Patent: January 29, 1991Assignee: General Electric CompanyInventors: Anthony A. Zotto, Raymond J. Thimineur, William J. Raleigh
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Patent number: 4988658Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from potassium carbonate, sodium carbonate, an alumina-containing compound, and water. Catalyst systems comprise of at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises of at least one promoter.Type: GrantFiled: July 17, 1989Date of Patent: January 29, 1991Assignee: Phillips Petroleum CompanyInventor: Charles A. Drake
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Patent number: 4985418Abstract: Use of fluticasone propionate in the treatment of bowel diseases when administered by the oral, stomal or rectal routes.Type: GrantFiled: December 23, 1987Date of Patent: January 15, 1991Assignee: Glaxo Group LimitedInventor: David A. Richards
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Patent number: 4983605Abstract: A pharmaceutical composition comprising a benzoyl urea compound (A) selected from the group consisting of a benzoyl urea compound (I) having the formula: ##STR1## wherein X is a halogen atom, a nitro group or a trifluoromethyl group, provided that when Y is a nitro group, X is a halogen atom or a nitro group, Y is a hydrogen atom, a halogen atom, a nitro group or a trifluoromethyl group, Z.sub.1 is a halogen atom or a trifluoromethyl group, Z.sub.2 is a hydrogen atom or a halogen atom, and A is a .dbd.CH-- group or a nitrogen atom, and a benzoyl urea compound (II) having the formula: ##STR2## wherein each of X.sub.1 and X.sub.2 is a hydrogen atom, a halogen atom or a nitro group, provided that when Y is a nitro group, X.sub.Type: GrantFiled: October 20, 1987Date of Patent: January 8, 1991Assignees: Ishihara Sangyo Kaisha Ltd., The Green Cross CorporationInventors: Nobuo Kondo, Masahiro Kikuchi, Tsunetaka Nakajima, Masahiro Watanabe, Kazumasa Yokoyama, Takahiro Haga, Nobutoshi Yamada, Hideo Sugi, Toru Koyanagi
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Patent number: 4982043Abstract: Catalyst systems, methods to improve a catalyst system, and dimerization processes therewith are provided. Catalyst systems which comprise at least one elemental alkali metal supported on an alkali metal carbonate catalyst support, are contacted with a liquid organic solvent in order to improve the isomer ratio of the desired reaction product(s) to undesired product(s).Type: GrantFiled: March 20, 1989Date of Patent: January 1, 1991Assignee: Phillips Petroleum CompanyInventor: Lori C. Hasselbring
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Patent number: 4982041Abstract: Alkali metal doped double perovskites containing manganese and at least one of cobalt, iron and nickel are useful in the oxidative coupling of alkane to higher hydrocarbons.Type: GrantFiled: January 10, 1990Date of Patent: January 1, 1991Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Kenneth D. Campbell