Patents by Inventor Masatsugu Mizuguchi

Masatsugu Mizuguchi 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: 7033972
    Abstract: A catalyst for producing dimethyl ether which comprises alumina particles having an average size of 200 ?m or less and a methanol synthesis catalyst layer formed around the alumina particles. The methanol synthesis catalyst is in an amount of 0.05 to 5 parts by weight to 1 part by weight of the alumina particles. Dimethyl ether is produced by the method of forming a slurry by introducing the catalyst into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: April 25, 2006
    Assignee: JFE Holdings, Inc.
    Inventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
  • Patent number: 7015255
    Abstract: (a) A medium oil wherein a main component is a hydrocarbon, and the number of paraffinic carbon atoms is 70% or more with respect to a total number of carbon atoms, (b) a medium oil wherein a main component is a polybutene, (c) a medium oil wherein a main component is a mixture of hydrocarbons of the formula (1): CH3—C(CH3)2—[—CH2—C(CH3)2—]n—CH2—R ??(1) wherein R is —CH(CH3)2 or —C(CH3)?CH2, and n is 1 to 10, (d) a medium oil wherein a main component is a hydrocarbon prepared by a Fischer-Tropsch synthesis, or (e) a medium oil wherein a main component is a branched paraffinic hydrocarbon prepared by hydrogenolysis of a hydrocarbon prepared by a Fischer-Tropsch synthesis, and a process of producing dimethyl ether using the medium oil, are disclosed.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: March 21, 2006
    Assignee: JFE Holdings, Inc.
    Inventors: Keiji Tomura, Takashi Ogawa, Masami Ono, Keiichi Okuyama, Seiji Aoki, Tsutomu Shikada, Masatsugu Mizuguchi, Yotaro Ohno
  • Publication number: 20060052647
    Abstract: A method for producing dimethyl ether comprising forming a slurry by introducing a catalyst for producing dimethyl ether into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry.
    Type: Application
    Filed: October 19, 2005
    Publication date: March 9, 2006
    Applicant: JFE HOLDINGS, INC.
    Inventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
  • Publication number: 20050038129
    Abstract: A catalyst for producing dimethyl ether which comprises alumina particles having an average size of 200 ?m or less and a methanol synthesis catalyst layer formed around the alumina particles. The methanol synthesis catalyst is in an amount of 0.05 to 5 parts by weight to 1 part by weight of the alumina particles. Dimethyl ether is produced by the method of forming a slurry by introducing the catalyst into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry.
    Type: Application
    Filed: September 9, 2004
    Publication date: February 17, 2005
    Applicant: JFE HOLDINGS, INC.
    Inventors: Tsutomu Shikada, Yataro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
  • Patent number: 6800665
    Abstract: A method for producing dimethyl ether comprising: (a) reacting a raw material gas containing carbon monoxide and hydrogen in the presence of a catalyst to produce a reaction gas including dimethyl ether, carbon dioxide, carbon monoxide and hydrogen; (b) separating the reaction gas from step (a) into carbon monoxide and hydrogen, and into dimethyl ether carbon dioxide; (c) recycling to step (a) the carbon monoxide and the hydrogen which were separated from the reaction gas in step (b); (d) removing the carbon dioxide from the dimethyl ether and the carbon dioxide from step (b) to obtain the dimethyl ether; and the (e) recycling the dimethyl ether from step (d) to step (b).
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: October 5, 2004
    Assignee: JFE Holdings, Inc.
    Inventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
  • Patent number: 6562306
    Abstract: An apparatus for producing dimethyl ether comprising: a slurry-bed reactor filled with a dimethyl ether synthesis catalyst and a medium oil therefor; a condenser for condensing a gasified medium oil discharged from the reactor; an adsorber for removing a catalyst-deactivation ingredient from the medium oil condensed in the condenser; and recycle means for recycling the medium oil to the slurry-bed reactor.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: May 13, 2003
    Assignee: NKK Corporation
    Inventors: Tsutomu Shikada, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono
  • Publication number: 20020132155
    Abstract: This invention provides a catalyst for producing hydrogen gas from a mixed gas comprising dimethyl ether and water vapor or carbon dioxide gas, which comprises copper, iron, cobalt, palladium, iridium, platinum, rhodium, or nickel as an active component, and a method of producing synthesis gas or hydrogen gas in a high yield at a low temperature. By using the catalyst, fuel cell, electricity generation, reduction of iron ore and the like can be carried out.
    Type: Application
    Filed: October 30, 2001
    Publication date: September 19, 2002
    Applicant: NKK Corporation
    Inventors: Tsutomu Shikada, Yotaro Ohno, Norio Inoue, Masatsugu Mizuguchi, Keiji Tomura, Takeshi Furukawa, Takuya Kadowaki, Sadayoshi Iwabuchi, Takashi Ogawa, Masami Ono, Kaoru Fujimoto
  • Patent number: 6361757
    Abstract: This invention provides a catalyst for producing hydrogen gas from a mixed gas comprising dimethyl ether and water vapor or carbon dioxide gas, which comprises copper, iron, cobalt, palladium, iridium, platinum, rhodium, or nickel as an active component, and a method of producing synthesis gas or hydrogen gas in a high yield at a low temperature. By using the catalyst, a fuel cell, electricity generation, reduction of iron ore and the like can be carried out.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: March 26, 2002
    Assignee: NKK Corporation
    Inventors: Tsutomu Shikada, Yotaro Ohno, Norio Inoue, Masatsugu Mizuguchi, Keiji Tomura, Takeshi Furukawa, Takuya Kadowaki, Sadayoshi Iwabuchi, Takashi Ogawa, Masami Ono, Kaoru Fujimoto
  • Patent number: 6147125
    Abstract: A method for producing dimethyl ether by forming a slurry by introducing a catalyst into a solvent and introducing a mixed gas comprising carbon monoxide and hydrogen into the slurry. The catalyst comprises alumina particles having an average size of 200 .mu.m or less and a methanol synthesis catalyst layer formed around each of the alumina particles. The methanol synthesis catalyst has a weight ratio of 0.05 to 5 to a weight of the alumina particles. The catalyst is produced by forming a layer comprising a methanol synthesis catalyst around each of the alumina particles.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: November 14, 2000
    Assignee: NKK Corporation
    Inventors: Tsutomu Shikada, Yotaro Ohno, Takashi Ogawa, Masatsugu Mizuguchi, Masami Ono, Kaoru Fujimoto
  • Patent number: 5650428
    Abstract: An arylsulfonamide derivative of the formula (I): ##STR1## wherein R.sup.1 is unsubstituted phenyl or naphthyl, or phenyl substituted by 1 to 3 same or different substituents selected from the group consisting of halogen, alkyl, nitro and alkoxy, R.sup.2 is straight, branched, or branched cyclic alkyl with 1 to 15 carbon atoms, phenyl, phenyloxyl, phenyloxy substituted by one or more halogen atoms, cycloalkyl with 5 to 7 carbon atoms, indolyl, alkylthiol with 1 to 4 carbon atoms, hydroxyl, protected hydroxyl, imidazolyl, pyridyloxyl, or --OSO.sub.2 R.sup.4, R.sup.4 is straight or branched alkyl with 1 to 15 carbon atoms, or unsubstituted phenyl or thienyl, or phenyl or thienyl substituted by 1 to 3 same or different substituents of halogen, alkyl, nitro and alkoxy, R.sup.3 is hydrogen or straight or branched alkyl with 1 to 20 carbon atoms, n is an integer of 0 to 10, p is an integer of 0 to 10, X is a group of the formula--(CH.sub.2)m-A-(CH.sub.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: July 22, 1997
    Assignee: NKK Corporation
    Inventors: Masayuki Ohmori, Shin-Ichi Sawamura, Takehiro Yamamoto, Yoshiko Kawada, Shihoko Maeda, Takeshi Yago, Akihiro Nakajima, Masatsugu Mizuguchi, Yasuo Miyoshi
  • Patent number: 5306842
    Abstract: A method for manufacturing a purified aromatic urethane. Aromatic urethanes are synthesized from a N,N'-disubstituted urea and an organic hydroxyl compound in a reaction medium. The organic hydroxyl compound and the primary aromatic amine side product which are present in the reaction mixture is distilled off and removed from the reaction mixture leaving a distillation bottom. The N,N'-disubstituted urea is separated and removed from the distillation bottom by solvent extraction of the aromatic urethane, and the aromatic urethane in the extract phase obtained in said solvent extraction is separated and purified.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: April 26, 1994
    Assignee: NKK Corporation
    Inventors: Takao Ikariya, Masanori Itagaki, Masatsugu Mizuguchi, Makoto Miyazawa, Sachiko Yamamoto
  • Patent number: 5130464
    Abstract: A method of manufacturing aromatic urethanes utilizes a urea production process wherein a primary aromatic amine, an aromatic nitro-compound and carbon monoxide are made to react together in the presence of a catalyst and solvents, to produce N,N'-disubstituted urea, the solvlent used in the urea production process consisting at least partly of an amide or oxygen-containing sulfur compound, and having the functions of stabilizing the catalyst and preventing it from separating out in a solution, and of increasing the activity of the catalyst, the quantity of the solvent being sufficient to permit it to fulfill these functions effectively. The method additionally includes an aromatic urethane production process wherein the N,N'-disubstituted urea produced is made to react with an organic compound containing hydroxyl groups, to produce a primary aromatic amine and aromatic urethane, the primary aromatic amine being separated to obtain the aromatic urethane.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: July 14, 1992
    Assignee: NKK Corporation
    Inventors: Takao Ikariya, Masanori Itagaki, Mikoto Iemoto, Masatsugu Mizuguchi, Tetsuo Hachiya, Tomomichi Nakamura, Makoto Miyazawa, Sachiko Yamamoto
  • Patent number: 4699994
    Abstract: According to a method of manufacturing a diphenylmethane dicarbamic acid ester by reacting an N-phenyl carbamic acid diester with a methylating agent in an aqueous acid solution, the aqueous acid solution is an aqueous inorganic acid solution, and the concentration of the N-phenyl carbamic acid ester in the aqueous acid solution is not more than the solubility thereof at the reaction temperature.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: October 13, 1987
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Takao Ikariya, Masanori Itagaki, Masatsugu Mizuguchi, Itaru Sakai, Osamu Tajima
  • Patent number: 4678856
    Abstract: The present invention relates to a method of manufacturing aromatic urethane, an aromatic mononitro-compound, an aromatic primary amine, and carbon monoxide being reacted using a catalyst containing a platinum group metal-containing compound as a major constituent to prepare N,N'-di-substituted urea. The resultant N,N'-di-substituted urea is reacted with a hydroxyl group-containing organic compound to prepare an aromatic primary amine and aromatic urethane, and the aromatic primary amine is separated to obtain aromatic urethane.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: July 7, 1987
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Takao Ikariya, Masanori Itagaki, Masatsugu Mizuguchi, Itaru Sakai, Osamu Tajima
  • Patent number: RE34137
    Abstract: The present invention relates to a method of manufacturing aromatic urethane, an aromatic mononitro-compound, an aromatic primary amine, and carbon monoxide being reacted using a catalyst containing a platinum group metal-containing compound as a major constituent to prepare N,N'-di-substituted urea. The resultant N,N'-di-substituted urea is reacted with a hydroxyl group-containing organic compound to prepare an aromatic primary amine and aromatic urethane, and the aromatic primary amine is separated to obtain aromatic urethane.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: December 1, 1992
    Assignee: NKK Corporation
    Inventors: Takao Ikariya, Masanori Itagaki, Masatsugu Mizuguchi, Itaru Sakai, Osamu Tajima