Patents by Inventor Kozo Takatsu
Kozo Takatsu 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).
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Patent number: 8444945Abstract: A method for removing sulfur compounds from a hydrocarbon-containing gas wherein the gas is fed to a desulfurizing bed comprising a desulfurizing agent A comprising zeolite and a desulfurizing agent B comprising at least one selected from the group consisting of a metal element, a metal oxide and a metal component-carried oxide, is provided. Hydrogen for a fuel cell is produced by a method, wherein the gas obtained by the described desulfurization method is contacted with a partial oxidation reforming catalyst, an autothermal reforming catalyst or a steam reforming catalyst.Type: GrantFiled: December 24, 2003Date of Patent: May 21, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Patent number: 8088708Abstract: The present invention provides a catalyst precursor substance containing copper, zinc, and aluminum and exhibiting an X-ray diffraction pattern having a broad peak at a specific interplanar spacing d (?). The present invention also provides a method for producing the catalyst precursor substance by mixing a solution containing a copper salt, a zinc salt, and an aluminum salt with a solution containing an alkali metal hydroxide or an alkaline earth metal hydroxide, thereby forming a precipitate. In the present invention, a catalyst is prepared through calcining of the catalyst precursor; the catalyst is employed for water gas shift reaction; and carbon monoxide conversion is carried out by use of the catalyst.Type: GrantFiled: April 2, 2008Date of Patent: January 3, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Yoshimi Kawashima, Satoshi Nakai
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Patent number: 7892417Abstract: The present invention relates to a catalyst for reforming a hydrocarbon comprising a carrier containing manganese oxide and carried thereon (a) at least one component selected from a ruthenium component, a platinum component, a rhodium component, a palladium component, an iridium component and a nickel component and a process for producing the same and to a process for reforming a hydrocarbon (steam reforming, self thermal reforming, partial oxidation reforming and carbon dioxide reforming) using the above catalyst. Provided are a catalyst for reforming a hydrocarbon which comprises ruthenium, platinum, rhodium, palladium, iridium or nickel as an active component and in which a reforming activity is elevated, a process for producing the same, and a steam reforming process, a self thermal reforming process, a partial oxidation reforming process and a carbon dioxide reforming process for a hydrocarbon using the above catalyst.Type: GrantFiled: April 17, 2008Date of Patent: February 22, 2011Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Tetsuya Fukunaga, Tomoki Yanagino, Kozo Takatsu, Takashi Umeki
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Patent number: 7776785Abstract: The invention provides a catalyst for carbon monoxide conversion, comprising from 10 to 90% by mass of a copper oxide ingredient, from 5 to 50% by mass of a zinc oxide ingredient and from 10 to 50% by mass of an aluminum oxide ingredient, and having a specific surface area of from 100 to 300 m2/g, a carbon monoxide adsorption of from 20 to 80 ?mol/g, and a copper oxide crystallite diameter of at most 200 angstroms, as a catalyst suitable for carbon monoxide conversion for fully reducing carbon monoxide in the hydrogen gas obtained through reforming of a starting hydrocarbon material, for the purpose of enabling stable long-term operation of a fuel cell which uses hydrogen gas as a fuel and which is frequently and repeatedly started and stopped.Type: GrantFiled: October 10, 2007Date of Patent: August 17, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Yoshimi Kawashima, Satoshi Nakai, Takashi Umeki
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Publication number: 20100112397Abstract: The present invention provides a catalyst precursor substance containing copper, zinc, and aluminum and exhibiting an X-ray diffraction pattern having a broad peak at a specific interplanar spacing d (?). The present invention also provides a method for producing the catalyst precursor substance by mixing a solution containing a copper salt, a zinc salt, and an aluminum salt with a solution containing an alkali metal hydroxide or an alkaline earth metal hydroxide, thereby forming a precipitate. In the present invention, a catalyst is prepared through calcining of the catalyst precursor; the catalyst is employed for water gas shift reaction; and carbon monoxide conversion is carried out by use of the catalyst.Type: ApplicationFiled: April 2, 2008Publication date: May 6, 2010Applicant: Idemitsu Kosan Co., LtdInventors: Kozo Takatsu, Yoshimi Kawashima, Satoshi Nakai
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Publication number: 20100015023Abstract: The invention provides a catalyst for carbon monoxide conversion, comprising from 10 to 90% by mass of a copper oxide ingredient, from 5 to 50% by mass of a zinc oxide ingredient and from 10 to 50% by mass of an aluminum oxide ingredient, and having a specific surface area of from 100 to 300 m2/g, a carbon monoxide adsorption of from 20 to 80 ?mol/g, and a copper oxide crystallite diameter of at most 200 angstroms, as a catalyst suitable for carbon monoxide conversion for fully reducing carbon monoxide in the hydrogen gas obtained through reforming of a starting hydrocarbon material, for the purpose of enabling stable long-term operation of a fuel cell which uses hydrogen gas as a fuel and which is frequently and repeatedly started and stopped.Type: ApplicationFiled: October 10, 2007Publication date: January 21, 2010Applicant: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Yoshimi Kawashima, Satoshi Nakai, Takashi Umeki
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Patent number: 7556872Abstract: The present invention provides an adsorbent for removing sulfur compounds, which adsorbent can effectively remove a variety of sulfur compounds contained in a hydrocarbon fuel to a low concentration even at room temperature; a process for effectively producing hydrogen that can be used in a fuel cell; and a fuel cell system employing hydrogen produced through the process. The adsorbent for removing a sulfur compound contained in a hydrocarbon fuel contains cerium oxide. The process for producing hydrogen that can be used in a fuel cell includes desulfurizing a hydrocarbon fuel through removal of a sulfur compound contained in the a hydrocarbon fuel by use of the aforementioned adsorbent and, subsequently, bringing the thus-desulfurized fuel into contact with a partial-oxidation reforming catalyst, an authothermal reforming catalyst, or a steam reforming catalyst. The fuel cell system employs hydrogen produced through the process.Type: GrantFiled: August 26, 2003Date of Patent: July 7, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Patent number: 7531361Abstract: Provided are a coloration agent for carbonyl sulfide which contains a metal oxide, and at least one metal component selected from among a cerium component, a silver component, a copper component, a nickel component, and an iron component, the metal component being supported on the metal oxide, or which contains at least one metal oxide selected from among a cerium oxide, a silver oxide, a copper oxide, a nickel oxide, and an iron oxide; carbonyl sulfide detection means including the coloration agent for carbonyl sulfide; and a fuel cell system including the detection means. The coloration agent for carbonyl sulfide has the ability to develop a color in the presence of carbonyl sulfide even at ambient temperature, exhibits excellent performance in detecting carbonyl sulfide contained in a hydrocarbon fuel, and enables the service life of a desulfurizing agent to be determined through visual observation.Type: GrantFiled: August 5, 2005Date of Patent: May 12, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Publication number: 20080287727Abstract: The present invention relates to a catalyst for reforming a hydrocarbon comprising a carrier containing manganese oxide and carried thereon (a) at least one component selected from a ruthenium component, a platinum component, a rhodium component, a palladium component, an iridium component and a nickel component and a process for producing the same and to a process for reforming a hydrocarbon (steam reforming, self thermal reforming, partial oxidation reforming and carbon dioxide reforming) using the above catalyst. Provided are a catalyst for reforming a hydrocarbon which comprises ruthenium, platinum, rhodium, palladium, iridium or nickel as an active component and in which a reforming activity is elevated, a process for producing the same, and a steam reforming process, a self thermal reforming process, a partial oxidation reforming process and a carbon dioxide reforming process for a hydrocarbon using the above catalyst.Type: ApplicationFiled: April 17, 2008Publication date: November 20, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tetsuya Fukunaga, Tomoki Yanagino, Kozo Takatsu, Takashi Umeki
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Publication number: 20080241039Abstract: A method for the oxidative removal of carbon monoxide from a hydrogen containing gas employing a catalyst for the selective oxidation of carbon monoxide is provided.Type: ApplicationFiled: February 15, 2008Publication date: October 2, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tetsuya FUKUNAGA, Kozo Takatsu, Masatoshi Shibata, Satoshi Hachiya, Hiroyuki Endo
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Patent number: 7378368Abstract: The present invention relates to a catalyst for reforming a hydrocarbon comprising a carrier containing manganese oxide and carried thereon (a) at least one component selected from a ruthenium component, a platinum component, a rhodium component, a palladium component, an iridium component and a nickel component and a process for producing the same and to a process for reforming a hydrocarbon (steam reforming, self thermal reforming, partial oxidation reforming and carbon dioxide reforming) using the above catalyst. Provided are a catalyst for reforming a hydrocarbon which comprises ruthenium, platinum, rhodium, palladium, iridium or nickel as an active component and in which a reforming activity is elevated, a process for producing the same, and a steam reforming process, a self thermal reforming process, a partial oxidation reforming process and a carbon dioxide reforming process for a hydrocarbon using the above catalyst.Type: GrantFiled: March 26, 2002Date of Patent: May 27, 2008Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Tetsuya Fukunaga, Tomoki Yanagino, Kozo Takatsu, Takashi Umeki
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Publication number: 20080081374Abstract: Provided are a coloration agent for carbonyl sulfide which contains a metal oxide, and at least one metal component selected from among a cerium component, a silver component, a copper component, a nickel component, and an iron component, the metal component being supported on the metal oxide, or which contains at least one metal oxide selected from among a cerium oxide, a silver oxide, a copper oxide, a nickel oxide, and an iron oxide; carbonyl sulfide detection means including the coloration agent for carbonyl sulfide; and a fuel cell system including the detection means. The coloration agent for carbonyl sulfide has the ability to develop a color in the presence of carbonyl sulfide even at ambient temperature, exhibits excellent performance in detecting carbonyl sulfide contained in a hydrocarbon fuel, and enables the service life of a desulfurizing agent to be determined through visual observation.Type: ApplicationFiled: August 5, 2005Publication date: April 3, 2008Applicant: IDEMITSU LOSAN CO., LTD.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Publication number: 20060108262Abstract: Provided are a method for removing sulfur compounds contained in a hydrocarbon-containing gas in which in feeding a hydrocarbon-containing gas to a desulfurizing bed to remove sulfur compounds contained in the above gas, used is the desulfurizing bed constituted from a desulfurizing agent A comprising zeolite and a desulfurizing agent B comprising at least one selected from a metal element, a metal oxide and a metal component-carried oxide, and a production process of hydrogen for a fuel cell in which a hydrocarbon-containing gas subjected to desulfurization treatment by the above method is brought into contact with a partial oxidation reforming catalyst, an autothermal reforming catalyst or a steam reforming catalyst.Type: ApplicationFiled: December 24, 2003Publication date: May 25, 2006Applicant: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Publication number: 20050271913Abstract: The present invention provides an adsorbent for removing sulfur compounds, which adsorbent can effectively remove a variety of sulfur compounds contained in a hydrocarbon fuel to a low concentration even at room temperature; a process for effectively producing hydrogen that can be used in a fuel cell; and a fuel cell system employing hydrogen produced through the process. The adsorbent for removing a sulfur compound contained in a hydrocarbon fuel contains cerium oxide. The process for producing hydrogen that can be used in a fuel cell includes desulfurizing a hydrocarbon fuel through removal of a sulfur compound contained in the a hydrocarbon fuel by use of the aforementioned adsorbent and, subsequently, bringing the thus-desulfurized fuel into contact with a partial-oxidation reforming catalyst, an authothermal reforming catalyst, or a steam reforming catalyst. The fuel cell system employs hydrogen produced through the process.Type: ApplicationFiled: August 26, 2003Publication date: December 8, 2005Applicant: IDEMITSU KOSAN CO. LTD.Inventors: Kozo Takatsu, Gakuji Takegoshi
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Publication number: 20050221977Abstract: The present invention relates to a catalyst for reforming a hydrocarbon comprising a carrier containing manganese oxide and carried thereon (a) at least one component selected from a ruthenium component, a platinum component, a rhodium component, a palladium component, an iridium component and a nickel component and a process for producing the same and to a process for reforming a hydrocarbon (steam reforming, self thermal reforming, partial oxidation reforming and carbon dioxide reforming) using the above catalyst. Provided are a catalyst for reforming a hydrocarbon which comprises ruthenium, platinum, rhodium, palladium, iridium or nickel as an active component and in which a reforming activity is elevated, a process for producing the same, and a steam reforming process, a self thermal reforming process, a partial oxidation reforming process and a carbon dioxide reforming process for a hydrocarbon using the above catalyst.Type: ApplicationFiled: March 26, 2002Publication date: October 6, 2005Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tetsuya Fukunaga, Tomoki Yanagino, Kozo Takatsu, Takashi Umeki
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Publication number: 20040209772Abstract: Provided is a catalyst for selective oxidation of CO gas in a gas of essentially hydrogen, and a method for producing the catalyst. The catalyst is highly active in a relatively high temperature range. The catalyst is for selectively oxidizing CO gas with hydrogen, and this carries ruthenium held on a carrier of titania and alumina, or carries ruthenium with an alkali metal and/or an alkaline earth metal held thereon. For producing the catalyst, a solution containing ruthenium and an alkali metal and/or an alkaline earth metal is applied to the carrier.Type: ApplicationFiled: May 19, 2004Publication date: October 21, 2004Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tetsuya Fukunaga, Kozo Takatsu, Masatoshi Shibata, Satoshi Hachiya, Hiroyuki Endo
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Patent number: 6780386Abstract: Provided is a catalyst for selective oxidation of CO gas in a gas of essentially hydrogen, and a method for producing the catalyst. The catalyst is highly active in a relatively high temperature range. The catalyst is for selectively oxidizing CO gas with hydrogen, and this carries ruthenium held on a carrier of titania and alumina, or carries ruthenium with an alkali metal and/or an alkaline earth metal held thereon. For producing the catalyst, a solution containing ruthenium and an alkali metal and/or an alkaline earth metal is applied to the carrier.Type: GrantFiled: June 19, 2001Date of Patent: August 24, 2004Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tetsuya Fukunaga, Kozo Takatsu, Masatoshi Shibata, Satoshi Hachiya, Hiroyuki Endo
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Patent number: 5436380Abstract: A process for producing aromatic hydrocarbons comprises bringing hydrocarbons having 2 to 12 carbon atoms into contact with a modified crystalline galloaluminosilicate catalyst prepared by treating a crystalline galloaluminosilicate having a tool ratio of SiO.sub.2 /(Ga.sub.2 O.sub.3 +Al.sub.2 O.sub.3) in the range from 5 to 1000 with a sulfur-containing substance. The process of the invention is simple and suited for general application and the catalyst can be prepared at a low cost. Aromatic hydrocarbons can be produced efficiently from the material hydrocarbons by bringing them into contact with the modified galloaluminosilicate having the excellent catalytic activity. The process of the invention can be adopted widely and effectively in the petroleum refining, in the petroleum chemistry and in the chemical industry in general.Type: GrantFiled: January 5, 1994Date of Patent: July 25, 1995Assignee: Idemitsu Kosan, Co., Ltd.Inventors: Masahiko Sawa, Yasushi Wakushima, Kozo Takatsu
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Patent number: 5336393Abstract: Catalytic conversion of organic compounds wherein catalysts come into contact with steam is performed efficiently by using a catalyst which comprises an MFI type zeolite having a ratio of SiO.sub.2 /(Al.sub.2 O.sub.3 +Ga.sub.2 O.sub.3) of 20 to 200 in molar ratio, a ratio of Ga.sub.2 O.sub.3 /Al.sub.2 O.sub.3 of 0 to 50 in molar ratio and a ratio of peak intensity of SiOH, I.sub.SiOH, to peak intensity of acidic OH, I.sub.H.sup.+, determined from .sup.1 H-NMR, I.sub.SiOH /I.sub.H.sup.+, of 0 to 0.5 and loses little catalytic activity on exposure to steam.Type: GrantFiled: May 28, 1992Date of Patent: August 9, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kozo Takatsu, Yasushi Wakushima, Hiroharu Masunaga, Masahiko Sawa
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Patent number: 4837000Abstract: Crystalline silicates and processes for the production thereof are described. These crystalline silicates are of new crystalline structure, which, as determined after calcination in the air at 550.degree. C., have a composition represented by the general formula (I): pM.sub.2/n O.Al.sub.2 O.sub.3.qSiO.sub.2 (the symbols are as defined in the appended claims) and give a X-ray diffraction pattern as shown in Table 2. They are superior in heat resistance and acid resistance, and can be used as catalysts for the conversion of various organic compounds, absorbents, or as catalysts for various reactions. They are produced by reacting an aqueous mixture comprising (a) a silica source, (b) an alumina source, (c) an alkali metal and/or alkaline earth metal source, and monoethanolamine at a temperature of 100.degree. to 300.degree. C. until the desired crystalline silicates are formed.Type: GrantFiled: December 11, 1986Date of Patent: June 6, 1989Assignee: Research Association for Petroleum Alternatives DevelopmentInventors: Kozo Takatsu, Noboru Kawata