Patents by Inventor Yoichi Kageyama

Yoichi Kageyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5130013
    Abstract: A process for producing a liquefied coal oil by a two step hydrogenation reaction of coal, which comprises subjecting coal to a first hydrogenation and subjecting at least a part of the reaction product of the first hydrogenation to a second hydrogenation, wherein the second hydrogenation is conducted in the presence of an alkali metal compound and/or an alkaline earth metal compound and a catalyst carrying a metal of Group VI-A and a metal of Group VIII of the Periodic Table.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 14, 1992
    Assignees: Mitsubishi Kasei Corporation, Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Cosmo Oil Co., Ltd.
    Inventors: Yoichi Kageyama, Iwao Yamamoto, Takahisa Yamaura, Jun Imai
  • Patent number: 4818374
    Abstract: A process for converting coal to an oil fraction, which comprises subjecting coal to a first hydrogenation reaction, deashing the reaction product of the first hydrogenation reaction and subjecting the deashed liquefied oil to a second hydrogenation reaction, wherein coal, a solvent and hydrogenation-treated heavy oil components are supplied for the first hydrogenation reaction; from the first hydrogenation reaction product, at least a part of the oil fraction is obtained; from the first hydrogenation reaction product, a substantial amount of preasphaltene components is removed simultaneously with or independently of the deashing operation, and the deashed liquefied oil containing heavy oil components and not greater than 20% by weight of preasphaltene components thereby obtained, is supplied for the second hydrogenation reaction; from the second hydrogenation reaction product, an oil fraction and heavy oil components are separated and the heavy oil components are recycled to the first hydrogenation reaction
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: April 4, 1989
    Assignees: Mitsubishi Chemical Industries Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Nobuyoshi Hirokoh, Yoichi Kageyama, Yukio Nakako, Tetsuo Matsumura
  • Patent number: 4750991
    Abstract: A method for hydrogenating a solvent-refined coal, comprising:(a) hydrogenating coal in the presence of a hydrocarbon solvent and an iron catalyst;(b) obtaining a solvent-refined coal material therefrom, which has a boiling point of at least 400.degree. under atmospheric pressure conditions;(c) removing preasphaltenes from said solvent-refined coal material to obtain a substantially preasphaltene free solvent-refined coal; and(d) hydrogenating the solvent-refined coal in a fixed bed under hydrogen pressure.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: June 14, 1988
    Assignees: Mitsubishi Chemical Industries, Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Yoichi Kageyama, Hironori Kageyama, Jun Imai, Yukio Nakako
  • Patent number: 4740289
    Abstract: A process for the hydrogenolysis of a coal liquid bottom containing benzene-insoluble components and having a boiling point of at least 420.degree. C., which comprises:(a) hydrogenating the coal liquid bottom at a temperature of not higher than 350.degree. C. in the presence of a catalyst comprising an alkali metal and/or an alkaline earth metal and a metal of Group VI A of the Periodic Table to reduce the content of the benzene-insoluble components in the fraction having a boiling point of at least 420.degree. C., to a level of not higher than 10% by weight, and then(b) subjecting the product to hydrogenolysis at a temperature of higher than 350.degree. C. and not higher than 450.degree. C. in the presence of a catalyst comprising a metal of Group VI A of the Periodic Table.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: April 26, 1988
    Assignees: Mitsubishi Chemical Industries Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Yoichi Kageyama, Tetsuo Masuyama
  • Patent number: 4737266
    Abstract: A method for hydrogenating a solvent-refined coal by heating it under hydrogen pressure in a fixed bed, characterized in that a solvent-refined coal fraction containing no substantial amount of preasphaltene is used as the solvent-refined coal.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: April 12, 1988
    Assignees: Mitsubishi Chemical Industries Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Yoichi Kageyama, Hironori Kageyama, Jun Imai, Yukio Nakako
  • Patent number: 4541914
    Abstract: A process for converting coal, comprising, subjecting a slurry composed essentially of coal, a hydrocarbon solvent and a hydrogenation catalyst to primary hydrogenation to liquify the coal, separating the ash content of said coal from the reaction product thereby obtaining a liquified product, subjecting at least a portion of the liquified product to secondary hydrogenation in the presence of a hydrogenation catalyst thereby converting the liquified product to light oil product, the secondary hydrogenation step being a point of supply of hydrogenation catalyst to the coal conversion system, separating the hydrogenation catalyst from the reaction product of the secondary hydrogenation step, and returning said separated hydrogenation catalyst to the primary hydrogenation step where it is used as the catalyst for primary hydrogenation of said slurry.
    Type: Grant
    Filed: April 12, 1983
    Date of Patent: September 17, 1985
    Assignees: Mitsubishi Chemical Industries Ltd., Kabushiki Kaisha Kobe Seikosho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Nobuyoshi Hirokoh, Yoichi Kageyama, Yukio Nakako, Tetsuo Matsumura
  • Patent number: 4508841
    Abstract: A porous refractory inorganic oxide product is produced by shaping a mixture of carbon black and a refractory inorganic oxide and/or a precursor of refractory inorganic oxide; drying a product; firing it in an oxygen-containing gas flow while burning said carbon black.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: April 2, 1985
    Assignees: Mitsubishi Chemical Industries, Ltd., Asia Oil Company, Limited
    Inventors: Kazuhiko Onuma, Yoichi Kageyama, Hiromu Kobayashi, Akihiro Matsuki, Makoto Suzuki
  • Patent number: 4448896
    Abstract: A hydrogenation catalyst for desulfurization and removal of heavy metals, comprises (a) at least one metal component selected from metals of Groups VI B and VIII of the Periodic Table, as a catalytically active component, and (2) a porous activated alumina carrier obtained by shaping a mixture of carbon black and a powder of activated alumina or a precursor of activated alumina, drying the shaped mixture and firing it in an oxygen-containing gas stream to burn off the carbon black.
    Type: Grant
    Filed: June 3, 1982
    Date of Patent: May 15, 1984
    Assignees: Mitsubishi Chemical Ind., Ltd., Asia Oil Company Limited
    Inventors: Yoichi Kageyama, Kazuhiko Onuma, Toshihiro Kawakami, Makoto Suzuki
  • Patent number: 4341659
    Abstract: There is disclosed a catalytic composition represented by the formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (Sb).sub.e (K).sub.f (P).sub.g (O).sub.hin which a, b, c, d, e, f, g and h stand for the numbers of atoms for molybdenum, tungsten, bismuth, lead, antimony, potassium, phosphorus and oxygen elements respectively, wherein, given that a+b=12,0.ltoreq.b.ltoreq.70.4.ltoreq.c.ltoreq.72.ltoreq.d.ltoreq.120.005.ltoreq.e/a.ltoreq.1.140.ltoreq.f/a.ltoreq.0.1360.ltoreq.g/a.ltoreq.0.54, andh is one-half the sum of the products of the valences and the numbers of atoms for the individual constituent elements other than oxygen.
    Type: Grant
    Filed: July 22, 1980
    Date of Patent: July 27, 1982
    Assignee: Mitsubishi Chemical Industries, Limited
    Inventors: Yoichi Kageyama, Masakatsu Hatano, Toru Koyama, Takao Kaneko, Masayosi Murayama, Kazunori Oshima
  • Patent number: 4339329
    Abstract: A heavy liquefied coal which is a source for carbon products is produced by heating coal with a hydrocarbon solvent under a hydrogen pressure atmosphere in the presence of a catalyst of a pulverized iron ore.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: July 13, 1982
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Yoichi Kageyama, Masato Aiura, Kikuo Moriya
  • Patent number: 4055512
    Abstract: A catalyst for producing a cyclomonoolefin by hydrogenating an aromatic hydrocarbon of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents hydrogen or C.sub.1 -C.sub.3 alkyl at 100.degree.-200.degree. C under a hydrogen pressure of 5-100 atm. in an aqueous medium having a pH of 2-7 is prepared by (1) immersing a carrier into an aqueous solution containing at least one cation selected from the group consisting of sodium, potassium, magnesium, calcium, barium, zinc, manganese and iron to obtain a treated carrier, (2) supporting at least one metal selected from the group consisting of ruthenium and rhodium on said treated carrier, and (3) immersing the carrier impregnated with at least one metal selected from the group consisting of ruthenium and rhodium into an aqueous solution containing at least one cation selected from the group consisting of sodium, potassium, magnesium, calcium, barium, zinc manganese and iron.
    Type: Grant
    Filed: July 1, 1976
    Date of Patent: October 25, 1977
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventors: Yoichi Kageyama, Yozo Kato, Hisao Kosugi
  • Patent number: 4053557
    Abstract: Exhaust gas containing a chlorohydrocarbon having 1-10 carbon atoms and molecular oxygen is contacted with chromium oxide or a boehmite supported platinum at an elevated temperature to decompose the chlorohydrocarbon to carbon dioxide, water, hydrogen chloride and free chlorine.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: October 11, 1977
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventor: Yoichi Kageyama
  • Patent number: 3972979
    Abstract: Exhaust gas containing a halohydrocarbon having 1 - 10 carbon atoms and molecular oxygen is contacted with chromium oxide or a boehmite supported platinum at an elevated temperature to decompose the halohydrocarbon to carbon dioxide, water, hydrogen halide and free halogen.
    Type: Grant
    Filed: May 14, 1974
    Date of Patent: August 3, 1976
    Assignee: Mitsubishi Chemical Industries Ltd.
    Inventor: Yoichi Kageyama