Patents by Inventor Masakatsu Hatano
Masakatsu Hatano 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: 5648558Abstract: A method for producing a polyoxyalkylene glycol by ring opening polymerization of a cyclic ether, wherein a zeolite (other than ZSM-5, ZSM-11 and Nu-5) is used as a catalyst.Type: GrantFiled: March 16, 1994Date of Patent: July 15, 1997Assignee: Mitsubishi Chemical CorporationInventors: Masakatsu Hatano, Akio Nakanishi, Yoshio Kabata, Masayuki Shirado, Hiroshi Takeo, Mitsuharu Kobayashi
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Patent number: 5591870Abstract: A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.Type: GrantFiled: June 7, 1995Date of Patent: January 7, 1997Assignee: Mitsubishi Chemical CorporationInventors: Masakatsu Hatano, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 5496787Abstract: A process for producing a vanadium-phosphorus oxide-containing catalyst precursor, which comprises (a) introducing into an organic solvent a vanadium alkoxide as a pentavalent vanadium compound and a phosphorus compound in the presence of a reducing agent capable of reducing the pentavalent vanadium compound to a tetravalent state, (b) hydrolyzing at least a part of the vanadium alkoxide before or after the introduction of the phosphorus compound, and (c) heating the vanadium-containing liquid medium obtained in step (b), in the presence of the phosphorus compound to reduce at least a part of vanadium to a tetravalent state.Type: GrantFiled: January 28, 1994Date of Patent: March 5, 1996Assignee: Mitsubishi Chemical CorporationInventors: Masakatsu Hatano, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 5128299Abstract: A process for producing a crystalline oxide of vanadium-phosphorus system, which comprises hydrothermally treating an aqueous medium containing (1) a tetravalent vanadium compound, (2) a pentavalent phosphorus compound, (3) a coordinate compound having at least two ligand atoms selected from the group consisting of oxygen atoms and nitrogen atoms and (4) a compound of at least one metal element selected from the group consisting of iron, nickel, cobalt and chromium, to form a crystalline oxide of vanadium-phosphorus system having an X-ray diffraction pattern shown in Table A:TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 15.6.degree. 19.7.degree. 24.3.degree. 27.2.degree. 28.8.degree. 30.5.degree. 33.8.degree.Type: GrantFiled: December 6, 1990Date of Patent: July 7, 1992Assignee: Mitsubishi Kasei CorporationInventors: Masakatsu Hatano, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 5049692Abstract: Disclosed herein is a process for producing a nitrile which comprises subjecting an alkane to a gas-phase catalytic oxidation reaction with ammonia in the presence of a complex oxide solid catalyst composed of molybdenum, vanadium, tellurium and niobium.According to the process of the present invention, it is possible to produce the objective nitrile at a high selectivity without using a halide, water, etc., moreover, at a relatively low temperature of about 350.degree. to 480.degree. C., particularly about 400.degree. to 450.degree. C.Type: GrantFiled: April 26, 1990Date of Patent: September 17, 1991Assignee: Mitsubishi Kasei CorporationInventors: Masakatsu Hatano, Atsushi Kayo
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Patent number: 5021384Abstract: A process for producing a crystalline oxide of vanadium-phosphorus system, which comprises hydrothermally treating an aqueous medium containing (1) a tetravalent vanadium compound, (2) a pentavalent phosphorus compound, (3) a coordinate compound having at least two ligand atoms selected from the group consisting of oxygen atoms and nitrogen atoms and (4) a compound of at least one metal element selected from the group consisting of iron, nickel, cobalt and chromium, to form a crystalline oxide of vanadium-phosphorus system having an X-ray diffraction pattern shown in Table A:TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu-K.alpha.) 2.theta. (.+-. 0.2.degree.) ______________________________________ 15.6.degree. 19.7.degree. 24.3.degree. 27.2.degree. 28.8.degree. 30.5.degree. 33.8.degree.Type: GrantFiled: September 29, 1989Date of Patent: June 4, 1991Assignee: Mitsubishi Kasei CorporationInventors: Masakatsu Hatano, Masayoshi Murayama, Kenji Shima, Masumi Ito
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Patent number: 4711867Abstract: A catalystic composition suitable for producing acrylonitrile from propylene, ammonia and oxygen (or oxygen-containing gas), which composition is represented by the following formula:(Mo).sub.a (W).sub.b (Bi).sub.c (Pb).sub.d (B).sub.e (Sb).sub.f (X).sub.g (O).sub.h(where: X is chromium or iron; a, b, c, d, e, f, g and h denote respectively number of atoms for molybdenum, tungsten, bismuth, lead, boron, antimony, X and oxygen, and wherein, if it is given that a+b=12, 0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12, 0.2/22.ltoreq.e/a.ltoreq.40/22, 0.ltoreq.f/a.ltoreq.25/22, and 0.ltoreq.g/a.ltoreq.3/22; and h denotes the number of oxygen necessary for satisfying the atomic valence for the individual constituent elements other than oxygen).Type: GrantFiled: February 27, 1986Date of Patent: December 8, 1987Assignee: Mitsubishi Chemical Industries LimitedInventors: Masakatsu Hatano, Kazunori Oshima, Tatsuya Ihara, Kenichi Kiyono
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Patent number: 4414133Abstract: 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 (A).sub.f (B).sub.g (C).sub.h (P).sub.m (O).sub.nin which A is iron and/or chromium, B is cerium and/or magnesium and C is potassium and/or lithium; and a, b, c, d, e, f, g, h, m and n stand for the numbers of atoms for molybdenum, tungsten, bismuth, lead, antimony, A, B, C, phosphorus and oxygen elements respectively, wherein, given that a+b=12,0.ltoreq.b.ltoreq.7, 0.4.ltoreq.c.ltoreq.7, 2.ltoreq.d.ltoreq.12,0.1/22.ltoreq.e/a.ltoreq.25/22, 0.05/22.ltoreq.f/a.ltoreq.3/22,0.ltoreq.g/a.ltoreq.2/22, 0.ltoreq.h/a.ltoreq.3/22,0.ltoreq.m/a.ltoreq.7/22, andn is the numbers of oxygen necessary to satisfy the valences of atoms for the individual constituent elements other than oxygen.Type: GrantFiled: January 25, 1982Date of Patent: November 8, 1983Assignee: Mitsubishi Chemical Industries LimitedInventors: Masayuki Otake, Masakatsu Hatano, Toru Koyama, Masayoshi Murayama, Kazunori Oshima
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Patent number: 4341659Abstract: 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: GrantFiled: July 22, 1980Date of Patent: July 27, 1982Assignee: Mitsubishi Chemical Industries, LimitedInventors: Yoichi Kageyama, Masakatsu Hatano, Toru Koyama, Takao Kaneko, Masayosi Murayama, Kazunori Oshima