Patents Assigned to Mitsui
  • Fiber-reinforced concrete and reinforcing material for concrete
    Patent number: 4565840
    Abstract: A fiber-reinforced concrete comprising two kinds of short fibers, one being a short fiber having a Young's modulus higher than that of concrete, the other being a short fiber which has a Young's modulus lower than that of concrete and showing good adhesiveness to concrete. The both fibers are mixed in a predetermined ratio and dispersed in a concrete matrix. A reinforcing material for concrete is also disclosed which material consisting of such fibers as mentioned above.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: January 21, 1986
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kazusuke Kobayashi, Ryokche Cho
  • Organic electrolyte cells
    Patent number: 4560631
    Abstract: An organic electrolyte cell comprising a light metal as the anode active material, and copper powder-added manganese dioxide as the cathode active material.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: December 24, 1985
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hideki Nishihama, Kazuhide Miyazaki
  • Heat-sensitive recording unit
    Patent number: 4561000
    Abstract: A heat-sensitive recording unit formed by supporting a methine-type chromogenic reactant and oxidizing organic compound on a base. A color production sensitivity regulator may further be supported on the base. It is also feasible to add a quaternary ammonium salt, tertiary alkanol amine or water-soluble ion sequestering agent for avoiding undesirable color production of the methine-type chromogenic reactant. The ammonium salt, amine or ion sequestering agent may be added upon forming the methine-type chromogenic reactant into an aqueous suspension in order support the methine-type chromogenic reactant on the base.
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: December 24, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Michihiro Tsujimoto, Makoto Asano, Kiyoharu Hasegawa, Hiroyuki Akahori
  • Shield machine
    Patent number: 4558906
    Abstract: A shield machine for enlarging a portion of an existing tunnel includes an inner and outer double cylinder shaped shield machine body with a cylindrical outer shield portion and a cylindrical inner guide portion designed to be driven in an axial direction of an existing tunnel and along an outer circumferential surface of primary assembly segments lining the existing tunnel. Jack members are provided for pushing forward the shield machine body by receiving a reaction from a reaction member such as secondary assembly segments lining a constructed enlarged tunnel. A scraper member is positioned adjacent to the inner guide portion for removing a back-filling agent on the outer surface of the primary assembly segments.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: December 17, 1985
    Assignee: Mitsui Kensetsu Kabushiki Kaisha
    Inventors: Shigeo Takamiya, Toshio Furuta
  • Method and apparatus for mobilizing geothermal fluid
    Patent number: 4558568
    Abstract: Geothermal fluid is pumped up through a production well applying the following process. The produced geothermal fluid is separated into steam and brine in a separator tank or a flash tank. A part of the separated steam is compressed by a steam compressor and brought into the production well. The steam acts as a pump by its bubble effect and pumps up the brine. The other part of steam and brine are utilized for driving the power generating apparatus such as a turbine, total flow turbine or the like.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: December 17, 1985
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Yuji Hoshino, Hajime Endou, Kazuyoshi Suda
  • High strength and high conductivity copper alloy
    Patent number: 4559200
    Abstract: A copper alloy excellent in general properties such as heat resistance, electric and heat conductivity and mechanical strength and suitable for use as materials for lead frames of electronic parts, heat exchanger fins, or the like can be obtained by optimizing the Fe and Ti contents and proportions of a Cu-Fe-Ti ternary alloy and adding thereto a suitable amount of one or more members selected from the group consisting of Mg, Sb, V Misch metal, Zr, In, Zn, Sn, Ni, Al, and P.
    Type: Grant
    Filed: August 7, 1984
    Date of Patent: December 17, 1985
    Assignee: Mitsui Mining and Smelting Company, Ltd.
    Inventors: Syuichi Yamasaki, Hiroshi Yamaguchi, Yousuke Taniguchi
  • Process for preparation of 3,3'- or 3,4'-diamino benzophenone
    Patent number: 4556738
    Abstract: 3,3'- or 3,4'-diamino benzophenone is prepared by catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a benzophenone compound or benzophenone compounds of the general formula ##STR1## in which X is a halogen atom at position 2 or 4 of the benzene ring and Y is hydrogen or a halogen atom and in which the nitro group is at position 3' or 4' of the benzene ring if Y is hydrogen, while Y is at position 4' and the nitro group is at position 3' of the benzene ring if Y is a halogen atom.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 3, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Saburo Kawashima, Akihiro Yamaguchi
  • Acetal resin composition
    Patent number: 4556690
    Abstract: An acetal resin composition comprising (A) an acetal resin and (B) 1 to 200 parts by weight, per 100 parts by weight of the acetal resin (A), of at least one modified alpha-olefin polymer, said modified alpha-olefin polymer (B) being a graft-copolymerization product of 100 parts by weight of an alpha-olefin polymer and 0.01 to 10 parts by weight of an unsaturated carboxylic acid or its derivative.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: December 3, 1985
    Assignee: Mitsui Petrochemical Industries, Ltd
    Inventor: Mikio Nakagawa
  • Low-cariogenic sweetners
    Patent number: 4556429
    Abstract: The sweetner prepared by adding palatinose to sucrose is a low-cariogenic since palatinose is not only low cariogenic in itself, but also inhibits the formation of insoluble glucan from sucrose in an oral cavity.Since the sweetner is almost same as sucrose in quality of sweetness, dissolvability in a mouth, palatability, etc., and further is low-cariogenic when it is used in foods, it is suitable as sweetner. In addition, since the sweetner is usually crystalline or powdery, it is easy to handle.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: December 3, 1985
    Assignee: Mitsui Sugar Co., Ltd.
    Inventors: Ichiro Takazoe, Kosei Ohta, Junichi Shimizu, Kazumasa Suzuki, Tatsuya Iwakura, Yoshikazu Nakajima
  • Method of and system for utilizing thermal energy accumulator
    Patent number: 4555905
    Abstract: A method and system is described which employs a thermal energy accumulator in which a thermal energy fluid and hot water coexist with each other. Hot water is taken out of the accumulator and supplied as thermal energy to an energy utilization compound arrangement of a total flow turbine and a steam turbine driving an electric power generator. The thermal energy fluid may be in the form of saturated steam, for example.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: December 3, 1985
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventor: Hajime Endou
  • Composition for liquid crystal color display
    Patent number: 4555355
    Abstract: As dichroic dyes for use in a liquid color display device, compounds of formula (I) ##STR1## such as 4'-octylphenyl perylene-3,9-dicarboxylate are provided. These compounds have various characteristic properties. For example, (1) they have a sufficient coloring ability in small amounts; (2) they have a high dichroic ratio and show a high contrast by application and non-application of voltage; (3) they have sufficient compatibility with liquid crystals; (4) they have excellent durability, are stable, and do not reduce the performance of a display device even in long-term use.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: November 26, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yasuyuki Yamada, Tadaaki Tanaka, Ryoichi Tukahara, Tsutomu Nishizawa
  • Preparation process for glyoxal
    Patent number: 4555583
    Abstract: Glyoxal may be produced with a high yield by bringing a gas, which has been formed by diluting ethylene glycol and molecular oxygen with an inert gas, into contact at a high temperature with a silver catalyst in the simultaneous presence of phosphorus or a phosphorus compound so as to effect the gas phase oxidation of the ethylene glycol.In the above process, it is possible to suppress the formation of glycolaldehyde, a reaction intermediate, and also to enhance the stability of the reaction by using silver powder having particle sizes of 1.times.10.sup.-3 mm or smaller as at least part of the silver catalyst.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: November 26, 1985
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoshiaki Toyoda, Kazuo Wakimura, Tadaharu Hase, Nobumasa Arashiba
  • Dichroic dye and liquid crystalline composition for color display
    Patent number: 4552684
    Abstract: An anthraquinonic dye of the formula ##STR1## is provided. When used as dichloric dyes in liquid crystalline color display elements, these dyes (1) have sufficient coloring ability in small amounts, (2) have a high dichloric ratio, (3) are fully soluble in liquid crystals, and (4) have excellent durability, are stable and do not degrade the performance of a display device upon long-term use.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: November 12, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yasuyuki Yamada, Tsutomu Nishizawa, Tamio Mikoda, Tooru Miyahara, Masaharu Kikutsugi
  • Process for preparing thermally stable super-soft polyurethane elastomer
    Patent number: 4552944
    Abstract: A super-soft polyurethane elastomer is prepared by reacting an organic polyisocyanate in the presence of a specified organometallic catalyst, with a molar ratio specified mixture of (a) low molecular weight triol and high molecular weight polyol, or (b) low molecular weight triol, aromatic ring containing low molecular weight diol and high molecular weight polyol.
    Type: Grant
    Filed: September 20, 1984
    Date of Patent: November 12, 1985
    Assignee: Mitsui-Nisso Corporation
    Inventors: Masayuki Kamiyama, Takashi Saito, Kiyotsugu Asai
  • 2-Fluoroethoxy-substituted benzene derivatives
    Patent number: 4552894
    Abstract: A 2-fluoroethoxy-substituted benzene derivative represented by the general formula ##STR1## wherein X represents an oxygen or sulfur atom, R.sup.1 and R.sup.2 represent a hydrogen atom or a lower alkyl group, n represents 0 or 1, and A represents a group of the general formula ##STR2## in which R.sup.3 and R.sup.4 represent a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a lower haloalkyl group, a lower haloalkylthio group or a methylenedioxy group, R.sup.5 and R.sup.6 represent a hydrogen atom or a lower alkyl group, and p and m represent 0 or 1.This compound is useful as an active ingredient of insecticidal and acaricidal agents, and can be produced by reacting a compound of the general formula ##STR3## with a compound of the general formulaA--D (IV)wherein in general formulae (III) and (IV), A, R.sup.1, R.sup.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: November 12, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tsuneo Inoue, Kiyoshi Nakatani, Kengo Oda, Tutomu Ishii, Takatoshi Udagawa, Shiro Shiraishi
  • Macroporous manganese dioxide water purifier
    Patent number: 4551254
    Abstract: A water purifier consisting essentially of manganese dioxide particles having a 20 to 48 mesh size and macroscopic pores which are so large in size as to permit passage of water therethrough. The particles may have active sites of needle-like or columnar crystals of manganese dioxide on the surfaces thereof. A method for making such water purifier is also described.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: November 5, 1985
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Nobuyuki Imada, Toshiteru Okada
  • 3-Nitrobenzene sulfonanilide derivatives and fungicidal compositions for the control of plant diseases containing same
    Patent number: 4551478
    Abstract: Disclosed are novel 3-nitrobenzene sulfonanilide derivatives and, among others, that of the formula ##STR1## as well as fungicidal compositions containing such compounds as the active ingredient. The compounds of the invention are markedly effective in controlling plant diseases and, in particular, clubroot disease of Brassica spp., have no toxicity to men, beasts, and fishes, exert no phytotoxicity on crops, have neither irritant nor unpleasant odor, and manifest their excellent fungicidal effect at low concentrations. Accordingly, they are ideally useful in fungicidal compositions.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: November 5, 1985
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tekeo Yoshimoto, Mitsumasa Umemoto, Keiichi Igarashi, Hideo Yamazaki, Yoshio Takasawa, Hirohisa Yanagita
  • Apparatus for taking up rod type materials
    Patent number: 4548537
    Abstract: An apparatus for taking up a plurality of rod type materials one by one from a pile of such materials is disclosed in which a plurality of rod type materials are stored temporarily in a rack. A part of a rod type material is separated from the plural rod type materials by a take-up element provided on the rack, and the separated rod material is gripped by a clamp provided in opposition to the take-up element. The rod type material fixed in the clamp is then drawn through a drawing element to be completely separated from the remaining rod type materials in the rack.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: October 22, 1985
    Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., Kajima Corporation
    Inventors: Hiroshi Kubotera, Kenji Ogawa, Kenji Hatakeyama
  • Treatment of manganese nodules
    Patent number: 4548684
    Abstract: Valuable metals in manganese nodules have their solvent solubilities altered by forming an alkaline-manganese electric cell using manganese nodules as a cathode active material component and discharging the cell with a selected discharge load. Thus, the solvent extraction percentage for Mn in manganese nodules can be controlled to less than 60% and that for other valuable metals be elevated to at least 80% by selecting the discharge load properly.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: October 22, 1985
    Assignee: Mitsui Mining & Smelting Co. Ltd.
    Inventors: Kazuhide Miyazaki, Yasuo Kitamura, Toshiteru Okada
  • Photocurable resin composition
    Patent number: 4548689
    Abstract: Disclosed is a photocurable composition comprising (a) a radical-polymerizable monomer, (b) an .alpha.-ketocarbonyl compound and (c) a derivative of mercaptobenzimidazole, mercaptobenzothiazole or mercaptobenzoxazole or an aromatic amine nucleus-substituted with an electron-attractive group. This composition has a high photocuring speed at a temperature close to normal temperature and gives a cured product excellent in various physical properties. This composition is valuable as a dental adhesive or resin.
    Type: Grant
    Filed: September 25, 1984
    Date of Patent: October 22, 1985
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Takeshi Sakashita, Takayuki Nakano