Patents Assigned to Mitsui
  • Patent number: 4343192
    Abstract: A flow rate measuring instrument comprising an oscillation assembly causing self-oscillation responsive to the flow condition of a fluid and a mechanism for adjusting the moment of inertia of the oscillation assembly in response to the variations in the flow condition and other conditions of the fluid, being capable of carrying out required corrections responsive to the changes in the density, level and the like of the fluid for obtaining the true flow rate of the fluid from a detected flow rate on the basis of the detection of the frequency of the oscillation assembly.
    Type: Grant
    Filed: February 27, 1980
    Date of Patent: August 10, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventor: Takao Shimomura
  • Patent number: 4342589
    Abstract: Disclosed is a process for preparing fine needle-like, ferromagnetic iron compound particles for use in magnetic recording in which needle-like iron oxyhydroxide fine particles prepared by simultaneously co-precipitating or cladding iron compound particles with an element of group II of the Periodic Table and manganese at atomic weight ratios of the element of group II of the Periodic Table and manganese to iron of from 0.001/100 to 10/100 and 0.005/100 to 10/100 respectively are reduced and/or oxidized under heating.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: August 3, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kazushi Ohshima, Mitsuro Matsunaga, Haruo Sekiguchi, Kazuhiro Imaoka, Fujio Hayashi
  • Patent number: 4342700
    Abstract: An oxidation-reducing reagent for a wet desulfurization process, which comprises (a) one or more compounds selected from the group consisting of salts of substituted anthraquinonesulfonic acids of the general formulas: ##STR1## wherein M stands for a sodium atom, a potassium atom or an ammonium group, and n is an integer of 1 or 2, or (b) a mixture of a salt of anthraquinone-2,7-disulfonic acid and one or more compounds shown by the general formula (I) and/or (II), as well as a process for preparing the compounds of the general formulas (I) and (II).
    Type: Grant
    Filed: February 4, 1981
    Date of Patent: August 3, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Katsuya Sakai, Ryuichi Mita, Toshio Kato, Chojiro Higuchi, Hisamichi Murakami
  • Patent number: 4342255
    Abstract: An oscillator actuated hydraulic impulse of the type including a spool valve actuated by an alternating signal from an oscillator to switch the hydraulic pressure in a double acting cylinder in order to cause reciprocating motion of a piston which strikes a boring tool. The hydraulic impulse device further includes a means for controlling the transition from the impulse stroke to the return stroke of the piston. In some embodiments, the hydraulic impulse device may further include a means for varying the duration of the impulse stroke and the return stroke of the piston.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: August 3, 1982
    Assignee: Mitsui Engineering and Shipbuilding Co., Ltd.
    Inventors: Takeo Watanabe, Makoto Matsuda
  • Patent number: 4342852
    Abstract: Disclosed is a setting type resin composition comprising (A) a setting type resin and (B) 10 to 200 parts by weight, per 100 parts by weight of said resin (A), of a substantially linear, high-molecular-weight novolak type substituted phenolic resin which comprises a constituent phenol component comprised mainly of a bifunctional phenol and has a number average molecular weight of at least 1500. This resin composition has highly improved heat resistance and mechanical strength characteristics by virtue of incorporation of the high-molecular-weight novolak type substituted phenolic resin, and this improving effect is especially prominent when an epoxy resin is used as the setting type resin.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: August 3, 1982
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Nobuyuki Takeda, Tadao Iwata
  • Patent number: 4339861
    Abstract: Disclosed herein is a continuous working process of steel bars for reinforced concrete comprising: feeding an endless steel bar material to a cutter while intermittently controlling the advance of said material in a predetermined distance and the stop thereof; cutting said endless steel bar so fed by said cutter into steel bars having a predetermined length; and banding together the steel bars so cut in a plural, predetermined number. An apparatus for practicing said process is also disclosed.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: July 20, 1982
    Assignees: Kajima Corporation, Mitsui Engineering and Shipbuilding Co.
    Inventors: Hiroshi Shiraishi, Shigeru Moriguchi
  • Patent number: 4339615
    Abstract: In a process for producing resorcinol, which comprises cleaving m-diisopropylbenzene dihydroperoxide in the presence of a water-soluble acid catalyst in a mixed solvent consisting of an aromatic hydrocarbon and acetone, treating the resulting acid cleavage product containing resorcinol with an aqueous solution of a neutral salt under acidic conditions, separating the solvent layer containing resorcinol from the aqueous layer, and recovering resorcinol from the separated solvent layer; the improvement wherein (i) the acid cleavage is carried out while maintaining the weight ratio of the aromatic hydrocarbon to acetone at less than 0.6, and at a time after formation of the acid cleavage product but before the treatment of the cleavage product with the aqueous solution of the neutral salt, the amount of the aromatic hydrocarbon in the mixed solvent is adjusted so that the weight ratio of the aromatic hydrocarbon to acetone in the product is from 0.6 to 1.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: July 13, 1982
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Ichiro Imai, Fujihisa Matsunaga, Hiroaki Nakagawa, Masayasu Isibasi, Tohru Taguchi
  • Patent number: 4338259
    Abstract: A process for producing an alpha-halogeno-beta-aminopropionitrile which comprises reacting an alpha,beta-dihalogenopropionitrile with ammonia in water and/or an organic solvent. Action of a mineral acid on the reaction product gives a mineral acid salt of an alpha-halogeno-beta-aminopropionitrile. An isolated alpha-halogeno-beta-aminopropionitrile and a sulfate thereof are also provided.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: July 6, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Ryuichi Mita, Akihiro Yamaguchi, Toshio Kato, Chojiro Higuchi, Hisamichi Murakami
  • Patent number: 4338424
    Abstract: In a process for polymerizing olefins in the gaseous phase in a first gas-phase polymerization zone and a second gas-phase polymerization zone, which are provided independently from each other, in the presence of a catalyst composed of a transition metal catalyst component and an organometallic compound of a metal of Groups I to III of the periodic table and in the co-presence of hydrogen gas while feeding the catalyst-containing polymer formed in the first zone to the second zone; the improvement wherein(i) a dilution zone for diluting a feed flow from the first gas-phase polymerization zone which comprises a mixture of the polymer, the catalyst, the olefin gas and hydrogen gas by feeding a fresh supply of olefin gas thereto is provided in a feed passage for feeding said flow from the first gas-phase polymerization zone to the second gas-phase polymerization zone,(ii) a part of the gas phase in said feed flow diluted in the dilution zone is recycled to the first gas-phase polymerization zone, and remainder i
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: July 6, 1982
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Yoshinori Morita, Akifumi Kato, Ryoichi Yamamoto
  • Patent number: 4337334
    Abstract: A process for producing a phenolic resin comprising condensing a phenol component and an aldehyde component, characterized in that the phenol component comprises (high-molecular-weight phenolic compounds which are left after bisphenol A-containing by-products formed in the production of bisphenol A by condensing acetone and phenol in the presence of an acid catalyst are treated at a high temperature of at least 150.degree. C. in the presence of an alkaline catalyst to remove low-boiling components therefrom.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: June 29, 1982
    Assignee: Mitsui Toatsu Chemicals Inc.
    Inventors: Yoshiro Shimizu, Toshio Itakura, Mitsuhiro Iwasa, Kunio Hanauye
  • Patent number: 4335209
    Abstract: A process for the preparation of L-tryptophan comprises reacting indole with serine in the presence of tryptophan synthetase or tryptophanase, wherein DL-serine or D-serine is used and a serine racemizing enzyme is included in the reaction system and reacted with the serine.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: June 15, 1982
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yoshiyuki Asai, Masao Shimada, Kenji Soda
  • Patent number: 4334704
    Abstract: An automobile door locking mechanism incorporated with a child lock device which is connected to an actuator lever of the mechanism through idle means and operable to keep the locking mechanism in a locking condition even when a locking knob is released and a door handle or button is manipulated and which allows the door or button to move idly.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: June 15, 1982
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Shinjiro Yamada
  • Patent number: 4334096
    Abstract: In the process for urea synthesis, an effluent from a reactor 2 containing urea, ammonium carbamate, excess ammonia and water is introduced in a first heater 3 to separate excess ammonia and to decompose ammonium carbamate, thereby separating them from the liquid phase; then the liquid effluent from the first heater 3 is introduced in a second heater 6 to separate the remaining excess ammonia and to decompose ammonium carbamate in the presence of starting carbon dioxide used as stripping gas, thereby separating them from the liquid phase; the liquid effluent from the second heater 6 is introduced into a urea solution purification step in which pressure is lower than in the above step; and the separated gaseous effluents from the first and the second heaters are returned into the reactor.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: June 8, 1982
    Assignees: Toyo Engineering Corporation, Mitsui Toatsu Chemicals, Inc.
    Inventors: Keizo Konoki, Michio Nobue, Akito Fukui, Shigeru Inoue
  • Patent number: 4332211
    Abstract: A granule producing apparatus comprises: a container; an exhaust means provided to the top of the container; a space in the upper interior of the container for separating solid material from gases; a space for a fluid bed in the lower interior of the container; a porous floor immediately below the fluid bed space for defining the lower limit of the fluid bed; an air chamber beneath the porous floor for supplying air streams to form the fluid bed; a means for supplying jet stream of air, provided below the fluid bed air stream supply chamber; a plurality of parallelly arranged funnels, said each funnel consisting of an inverse truncated cone and a cylindrical pipe connected to the lower end of the cone, said upwardly enlarged cone opens into the interior of the container with its upper end merging with the porous floor, said each cylindrical pipe having its lower end connected to the jet stream supply means; a means disposed within the upper portion of the cylindrical pipe of each funnel for spraying liquid un
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: June 1, 1982
    Assignees: Toyo Engineering Corporation, Mitsui Toatsu Chemicals, Inc., Tsukishima Kikai Co., Ltd.
    Inventors: Susumu Nioh, Hiroshi Hirayama, Tetsuzo Honda, Takashi Nagahama, Masaki Naruo, Teruo Yoshida, Gisaburo Siotu, Yoshinori Sato, Kenji Toyama
  • Patent number: 4331561
    Abstract: New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are(a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom;(b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and(c) a solid component comprising, at least on surface, the reaction product of a halogen. Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4.Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: May 25, 1982
    Assignees: Montedison S.p.A., Mitsui Petrochemical Industries, Ltd.
    Inventors: Luciano Luciani, Norio Kashiwa, Pier C. Barbe, Akinori Toyota
  • Patent number: 4331451
    Abstract: A process for catalytic gasification of heavy oil of a specific gravity of higher than 0.7 with steam or steam/oxygen-containing gas characterized in that the heavy oil is contacted with chromium oxide catalyst or a catalyst comprising a mixture of chromium oxide and one or more of alkaline earth metal oxides, aluminum oxide, zirconium oxide, nickel oxide and cobalt oxide.More particularly, the present invention relates to a process for catalytic gasification of heavy oil of a specific gravity of higher than 0.7 characterized in that the heavy oil is contacted with a gasification catalyst comprising calcium aluminate, an alkali aluminate or tungsten-containing nickel and then the heavy oil is further contacted with said chromium oxide catalyst or chromium oxide-containing catalyst.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: May 25, 1982
    Assignees: Mitsui Toatsu Chemicals, Inc., Toyo Engineering Corporation
    Inventors: Kazuyoshi Isogaya, Eiiti Sugiyama, Kenji Yoshida, Katsutoshi Kikuchi
  • Patent number: 4331608
    Abstract: Unsaturated compounds having at least 4 carbon atoms, including unsaturated alicyclic compounds having at least 4 carbon atoms, unsaturated aliphatic compounds having at least one carbon-carbon unsaturated bond and having at least 4 carbon atoms and unsaturated aromatic compounds having at least one carbon-carbon unsaturated bond in the branched chain thereof and (ii) aldehydes or ketones having at least 4 carbon atoms are catalytically co-oxidized with an oxygen-containing gas in a liquid phase to form a cleaveged product or products of unsaturated bond of the unsaturated compounds at a high yield. This co-oxidation reaction is carried out in the presence of a heavy metal containing iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, copper, silver, chromium, molybdenum, tungsten, manganese and rhenium and the compounds thereof.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: May 25, 1982
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Keiji Kawamoto, Toshihiro Yoshioka
  • Patent number: 4330649
    Abstract: Improved process for producing olefin polymer or copolymer characterized by using (I) a solid catalyst component (A) which is he product of reaction of (a) a magnesium compound in the liquid state having no reducing ability with (b) a titanium compound in the liquid state in the presence of an electron donor having no active hydrogen, said magnesium compound (a) being a liquid magnesium compound or a solution of a magnesium compound or being obtained by contacting the magnesium compound with at least one electron donor selected from the group consisting of alcohols, organic carboxylic acids, aldehydes, amines and mixtures thereof, or the product of reaction of the magnesium compound (a) with the titanium compound (b) in the absence of the electron donor having no active hydrogen atom followed by treatment with the electron donor having no active hydrogen atom, and (II) the mole ratio of the compound (a) to the compound (b), calculated as metal atoms, is at least about 2.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: May 18, 1982
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Mamoru Kioka, Hiroaki Kitani, Norio Kashiwa
  • Patent number: 4329517
    Abstract: In a process for producing a mono- or di-ortho-methyl-substituted phenol which comprises methylating a phenol having one or two ortho-hydrogens with methanol in the presence of a catalytic amount of a catalyst comprising a major proportion of an oxide of iron as a first component (A) and a minor proportion of at least one oxide of metal other than iron as a second component (B), the improvement wherein said metal other than iron in component (B) is a metal selected from the group consisting of Ga, Ge, Y, Nb, Hf, Bi and Ta; and a catalyst used therefor.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: May 11, 1982
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Katsuo Taniguchi, Kazunori Takahata, Yoshiaki An-Nen
  • Patent number: 4329510
    Abstract: In a process for recovering a purified ketone substantially free from aldehydes which comprises contacting a crude ketone containing small amounts of aldehydes with an alkali and then distilling the treated crude ketone, the improvement wherein said alkali is a solid alkali composition composed of an alkali metal compound selected from alkali metal oxides and hydroxides, an alkaline earth metal compound selected from alkaline earth metal oxides and hydroxides and silicon dioxide in which the mole ratio of the alkali metal to the alkaline earth metal is in the range of from 1:1 to 1:15, and the mole ratio of the alkali metal to silicon is in the range of from 1:0.25 to 1:5.
    Type: Grant
    Filed: August 6, 1980
    Date of Patent: May 11, 1982
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kazutoyo Uno, Hisaya Miki