Patents by Inventor Shigeki Nagamatsu
Shigeki Nagamatsu 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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Publication number: 20110172468Abstract: One object of the present invention is to provide a method for producing an alcohol which can produce a target alcohol containing a remarkably low content of the sulfur compound(s), and the present invention provides a method for producing an alcohol comprising a separation process which reduces the content of sulfur compound(s) in a crude alcohol containing at least the sulfur compound(s) through desulfurization treatment in which the crude alcohol is contacted with a separation membrane based on a pervaporation method, thereby a content of the sulfur composition in the crude alcohol is decreased.Type: ApplicationFiled: September 17, 2009Publication date: July 14, 2011Applicants: JGC CORPORATION, KYOWA HAKKO BIO CO., LTD., KYOWA HAKKO CHEMICAL CO., LTD.Inventors: Hisashi Yamamoto, Naoyoshi Iwasaki, Shigeki Nagamatsu, Yukitoshi Fukuda, Hiromichi Hidaka, Atsushi Kouno, Yoshihiro Katoh
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Publication number: 20100272633Abstract: A method for producing an alcohol of the present invention provides an alcohol having the total sulfur content of 10 ppm by weight or less, by subjecting an alcohol having the total sulfur content of 30 ppm by weight or more and the propanols content of 200 ppm to at least one desulfurization treatment selected from at least one of a desulfurization treatment by a reaction process, a desulfurization treatment with a physical adsorbent, and a desulfurization treatment with a chemical adsorbent.Type: ApplicationFiled: December 11, 2008Publication date: October 28, 2010Applicants: JGC CORPORATION, KYOWA HAKKO BIO CO., LTD., KYOWA HAKKO CHEMICAL CO., LTD.Inventors: Hisashi Yamamoto, Naoyoshi Iwasaki, Shigeki Nagamatsu, Nobuhiro Yamada, Yukitoshi Fukuda, Hiromichi Hidaka, Hidenobu Oda
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Patent number: 7384537Abstract: According to the method of manufacturing refined oil of the present invention, refined oil which has a viscosity of 20 cst or lower at 135° C., a pour point of 30° C. or lower, an alkali metal content of 1 wt ppm or less, a vanadium content of 10 wt ppm or less and a sulfur content of 0.3 wt % or lower can be prepared, by bringing feed oil into contact with hydrogen in the presence of the demetalizing/desulfurizing catalyst 3 and the hydrogenolysis catalyst 5. This method can decrease the viscosity, pour point and sulfur concentration of the refined oil to sufficiently low levels, and decreases the production cost.Type: GrantFiled: October 19, 2001Date of Patent: June 10, 2008Assignee: JGC CorporationInventors: Shigeki Nagamatsu, Makoto Inomata, Susumu Kasahara
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Patent number: 7276150Abstract: The process for desulfurizing a gas oil fraction according to the invention comprises a low-boiling gas oil fraction hydrodesulfurization step (I) wherein a low-boiling gas oil fraction is desulsurized under the condition of a H2/Oil ratio of 70 to 200 Nm3/kl to obtain a treated oil, a high-boiling gas oil fraction hydrodesulfurization step (II) wherein a high-boiling gas oil fraction is desulsurized under the condition of a H2Oil ratio of 200 to 800 Nm3/kl to obtain a treated oil, and a step (III) wherein the treated oil obtained in the step (I) is mixed with the treated oil obtained in the step (II), and in this process, at least a part of a gas containing unreacted hydrogen in the step (II) is used for the hydrodesulfurization of the step (I).Type: GrantFiled: November 16, 2001Date of Patent: October 2, 2007Assignee: JGC CorporationInventors: Shigeki Nagamatsu, Jun Abe, Akira Sugimoto, Makoto Inomata, Tetsuya Watanabe
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Publication number: 20040031725Abstract: According to the method of manufacturing refined oil of the present invention, refined oil which has a viscosity of 20 cst or lower at 135° C., a pour point of 30° C. or lower, an alkali metal content of 1 wt ppm or less, a vanadium content of 10 wt ppm or less and a sulfur content of 0.3 wt % or lower can be prepared, by bringing feed oil into contact with hydrogen in the presence of the demetalizing/desulfurizing catalyst 3 and the hydrogenolysis catalyst 5. This method can decrease the viscosity, pour point and sulfur concentration of the refined oil to sufficiently low levels, and decreases the production cost.Type: ApplicationFiled: September 8, 2003Publication date: February 19, 2004Inventors: Shigeki Nagamatsu, Makoto Inomata, Susumu Kasahara
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Publication number: 20030146133Abstract: The process for desulfurizing a gas oil fraction according to the invention comprises a low-boiling gas oil fraction hydrodesulfurization step (I) wherein a low-boiling gas oil fraction is desulsurized under the condition of a H2/Oil ratio of 70 to 200 Nm3/kl to obtain a treated oil, a high-boiling gas oil fraction hydrodesulfurization step (II) wherein a high-boiling gas oil fraction is desulsurized under the condition of a H2Oil ratio of 200 to 800 Nm3/kl to obtain a treated oil, and a step (III) wherein the treated oil obtained in the step (I) is mixed with the treated oil obtained in the step (II), and in this process, at least a part of a gas containing unreacted hydrogen in the step (II) is used for the hydrodesulfurization of the step (I). According to the invention, there can be provided a process and an apparatus for desulfurizing a gas oil fraction, which are capable of using hydrogen and energy efficiently and capable of producing a highly desulfurized gas oil in a small catalytic amount.Type: ApplicationFiled: October 31, 2002Publication date: August 7, 2003Inventors: Shigeki Nagamatsu, Jun Abe, Akira Sugimoto, Makoto Inomata, Tetsuya Watanabe
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Patent number: 6454934Abstract: A petroleum processing method comprising the steps of: performing an atmospheric distillation of crude oil; collectively hydrodesulfurizing the resultant distillates consisting of gas oil and fractions whose boiling point is lower than that of gas oil in a reactor in the presence of a hydrogenation catalyst at 310 to 370° C. under 30 to 70 kg/cm2G (first hydrogenation step); and further performing hydrodesulfurization at lower temperatures (second hydrogenation step). When the second hydrogenation step is carried out only for the heavy naphtha obtained by separating the distillates after the first hydrogenation step, the second hydrogenation temperature can be in the range of 250 to 400° C.Type: GrantFiled: September 10, 1998Date of Patent: September 24, 2002Assignee: JGC CorporationInventors: Makoto Inomata, Toshiya Okumura, Shigeki Nagamatsu
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Publication number: 20020008049Abstract: A petroleum processing method comprising the steps of: performing an atmospheric distillation of crude oil; collectively hydrodesulfurizing the resultant distillates consisting of gas oil and fractions whose boiling point is lower than that of gas oil in a reactor in the presence of a hydrogenation catalyst at 310 to 370° C. under 30 to 70 kg/cm2G (first hydrogenation step); and further performing hydrodesulfurization at lower temperatures (second hydrogenation step). When the second hydrogenation step is carried out only for the heavy naphtha obtained by separating the distillates after the first hydrogenation step, the second hydrogenation temperature can be in the range of 250 to 400° C. The hydrodesulfurization having been performed for each of gas oil, kerosene, heavy naphtha and light naphtha in the art can be collectively and efficiently carried out, so that the oil refinery plant can be simplified and so that the cost of oil refinery equipment and running cost can be reduced.Type: ApplicationFiled: September 10, 1998Publication date: January 24, 2002Inventors: MAKOTO INOMATA, TOSHIYA OKUMURA, SHIGEKI NAGAMATSU
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Patent number: 5442121Abstract: A process for producing N,N-disubstituted aminophenol which comprises the steps of:obtaining a reaction mixture containing N-substituted aminophenol by reacting a dihydric phenol and an amine;subjecting said reaction mixture to heat treatment so as to thermally decompose quaternary ammonia salt contained in said reaction mixture into a dihydric phenol and an amine, and removing at least said amine by distillation;separating high-boiling impurities by distillation to separate N-substituted aminophenol; andsubjecting said separated N-substituted aminophenol to reduction alkylation using an aldehyde compound.According to the present invention, high-purity N,N-disubstituted aminophenol can be obtained in a high yield at high selectivity, and a reduction catalyst can be used repeatedly because its activity can be maintained at a high level and yet it can retain high activity for a long period of time.Type: GrantFiled: November 15, 1994Date of Patent: August 15, 1995Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Shigeki Nagamatsu, Tomohiro Arase, Masaaki Yasuda
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Patent number: 4798866Abstract: A branched alpha-olefinic polymer composition having excellent melt flowability, good moldability and excellent melt tension and comprising at least two branched alpha-olefinic polymers each composed of (A) recurring units derived from a branched alpha-olefin containing 5 to 10 carbon atoms and having a branch at the 3-position or a position of a higher number and (B) recurring units derived from a linear alpha-olefin containing 2 to 20 carbon atoms; and a process for producing this polymer composition by a multiplicity of polymerization steps using a catalyst formed from (A) a highly stereoregular titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredient, (B) an organoaluminum compound and (C) an electron donor.Type: GrantFiled: July 13, 1987Date of Patent: January 17, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Junichi Yoshitake, Hiroaki Kitani, Norio Kashiwa, Takeshi Muranaka, Kenichi Tominari, Shigeki Nagamatsu