Patents Assigned to Mitsui
  • Patent number: 4972636
    Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistence occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: November 27, 1990
    Assignee: Mitsui Kensetsu Kabushiki Kaisha
    Inventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi
  • Patent number: 4973706
    Abstract: Disclosed is a process for preparing an indigo compound in improved yield by reacting indole or other indole compound having no substituent at the 2- and 3-positions with an organic hydroperoxide in the presence of an additive selected from the group consisting of (1) a carboxyl compound and (2) a boric acid ester compound. The yield of the indigo compound can further be increased by using a metallic compound catalyst capable of oxidizing carbon atom at the 3-position of the indole compound, such as a compound of a metal of group 4A, 5A or 6A of the periodic table.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: November 27, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yoshihiro Yamamoto, Usaji Takaki, Shinobu Aoki, Isao Hara
  • Patent number: 4972024
    Abstract: Disclosed herein is a rubber-modified styrene copolymer which contains as an impact strength modifier a rubbery polymer having a viscosity of 2-250 centipoises as measured at 25.degree. C. as a 5 wt. % styrene solution and a styrene insoluble content lower than 0.1 wt. %, produced by anionic polymerization and dispersed in a continuous phase of a styrene-acrylonitrile copolymer. The rubbery polymer contains small particles of the same styrene-acrylonitrile copolymer occluded in the form of cells. The areas of particles in each of which the maximum cell diameter is smaller than 0.1 .mu.m are at least 40% of the area of all the particles of the rubbery polymer and the volume average particle size of these particles is 0.1-0.4 .mu.m. The weight ratio of the monomers in the styrene-acrylonitrile copolymer is 90/10.gtoreq.styrene/acrylonitrile.gtoreq.55/45. Per 100 parts by weight of the copolymer, the proportions of polymers having a molecular weight greater than 1,000,000 is smaller than 0.
    Type: Grant
    Filed: July 26, 1988
    Date of Patent: November 20, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Mune Iwamoto, Norifumi Ito, Kazuo Sugazaki, Tetsuyuki Matsubara, Toshihiko Ando, Yasuo Furuta
  • Patent number: 4972035
    Abstract: Ultra-high-molecular-weight polyolefin fine powder characterized in that said fine powder has an intrinsic viscosity measured in decalin at 135.degree. C. of at least 10 dl/g and an average particle diameter in the range of 1-80 .mu.m, at least 20 weight % of the powder passing through 350 Tyler mesh screen.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: November 20, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Michiharu Suga, Mamoru Kioka, Toshio Kobayashi, Akifumi Kato, Michio Endo
  • Patent number: 4971373
    Abstract: A noise suppressing device in a lock device for a vehicle, including a body to be fixed to a door of the vehicle; a latch rotatably supported in the body and adapted to be rotated by engagement with a striker fixed to a vehicle body; a ratchet rotatably supported in the body and adapted to engage a full-latch stepped portion of the latch and thereby prevent reverse rotation of the latch; first and second spring members for biasing the ratchet to engage the same with the latch; and an open lever for releasing engagement of the ratchet with the full-latch stepped portion; wherein the first spring member normally biases the ratchet to engage the same with the latch, and the second spring member does not bias the ratchet under a full-latch condition where the ratchet is engaged with the full-latch stepped portion of the latch, while when the ratchet is rotated in a releasing direction, the second spring member biases the ratchet.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: November 20, 1990
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Tetsuzo Igata, Atsuo Suzuki, Makoto Sakamoto
  • Patent number: 4971815
    Abstract: An additive for stock feeds containing decomposition products of chicory roots in which the total content of polysaccharides and inulooligosaccharides of tri- and higher saccharides obtained by decomposing the chicory roots is 40% by weight or more of the total solids content and is 80% by weight or more of the total saccharides. The stock feed preferably contains 0.1 to 10% by weight of the additive. The additive is prepared by a process which comprises the steps of chopping and then heating/drying chicory roots in order to form chicory flakes, and grinding the chicory flakes, or by a process which comprises the step of enzymatically decomposing the chicory roots without an extraction step.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: November 20, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Hiroaki Tamatani, Kazuo Takahashi, Kazuo Sato, Kiyoshi Mizushima, Fuminobu Yoshimi, Sohei Morita
  • Patent number: 4970258
    Abstract: When a hydrophobic thermoplastic resin such as an olefin resin and a water-insoluble or non-water-swelling polymer containing a carboxylic acid salt group are melt-kneaded in the presence of water, phase inversion of forming a dispersion comprising water as the dispersion medium phase and resin particles as the dispersed phase is caused even if the amount of water is very small. If an anionic surfactant, optionally together with a solvent or oil, is made present in the composition to be melt-kneaded, the size of dispersed particles can be greatly reduced in the formed aqueous dispersion even if a resin having a very high molecular weight or a high melt viscosity is used.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: November 13, 1990
    Assignee: Mitsui Petrochemical Industries, Inc.
    Inventors: Shiro Homma, Masatoshi Kashiwagi, Mitsuhiro Tanaka
  • Patent number: 4970021
    Abstract: Phthalocyanine compounds are described, which are represented by the following general formula (I): ##STR1## wherein R.sub.1 -R.sub.8 are individually a hydrogen atom or an alkyl or aryl group, a-h stand individually for an integer of 1-20, and M denotes two hydrogen atoms or a metal atom, metal halide, metal oxide, metal hydroxide, dialkylmetal, diarylmetal, bis(alkyloxy)metal or bis(trialkylsilyloxy)metal. Optical recording media and liquid crystal display panels, which contain at least one of the phthalocyanine compounds, are also described.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: November 13, 1990
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Incorporated
    Inventors: Masakatsu Nakatsuka, Tsutomu Nishizawa, Takahisa Oguchi, Hisato Itoh, Katashi Enomoto
  • Patent number: 4969335
    Abstract: A refrigeration apparatus including a hot gas bypass pipe provided in a refrigeration circuit is constructed by connecting a compressor, a condenser, an expansion valve and an evaporator, a humidifier for humidifying the inside of a chamber, a heat exchanger located between a feed pipe for supplying water to said humidifier and said hot gas bypass pipe. This apparatus prevents freezing of water inside the pipes.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: November 13, 1990
    Assignee: Mitsui O.S.K. Lines, Ltd.
    Inventors: Tatsuroh Sasaki, Syozoh Kameyama
  • Patent number: 4970289
    Abstract: There is provided the process for producing an imide-based prepolymer having high solvent solubility by reacting an unsaturated bisimide of formula (I): ##STR1## wherein D is a divalent group having a carbon-to-carbon double bond, and A is a divalent group having at least two carbon atoms, with a diamine in the presence of a radical scavenger.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: November 13, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventor: Kojiro Kan
  • Patent number: 4970323
    Abstract: N-substituted monochlorosuccinimides e.g., N-phenylmonochlorosuccinimide, can be prepared in a high yield by reacting a maleamic acid, e.g., N-phenylmaleamic acid, with phosgene in the presence of a catalyst, e.g., dimethylformamide.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: November 13, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Mihaya Matsukawa, Masaru Wada, Hiroshi Suizu, Masayuki Furuya, Teruyuki Nagata
  • Patent number: 4968846
    Abstract: This invention provides a method for the prevention of oxidation of resulting methacrolein immediately after its discharge from a reaction tube upon production of the methacrolein by vapor-phase oxidation of isobutylene, tertiary butanol or methallyl alcohol with a molecular-oxygen-containing gas in the presence of a catalyst. An inert gas and/or recirculated reaction gas or a mixed gas of an inert gas and/or recirculated reaction gas and air is fed and mixed with a reaction product gas immediately after an outlet of the reaction tube.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: November 6, 1990
    Assignees: Mitsui Toatsu Chemicals, Incorporated, Kyowa Gas Chemical Industry Company, Ltd.
    Inventors: Morimasa Kuragano, Kozo Iwasaki, Yoshio Koyama, Takeshi Isobe, Hirozo Segawa, Katsuji Yoguchi
  • Patent number: 4968752
    Abstract: Proposed herein is an ionomer composition which comprises a reaction product of from 90 to 99.5% by weight of an ethylene copolymer-type ionomer (A) with from 0.5 to 10% by weight of an olefin copolymer (B) having epoxy groups in its side chains, and from 5 to 200 parts by weight, based on 100 parts by weight of said reaction product, of an olefin-type thermoplastic elastomer (C). The proposed ionomer composition is excellent in scratch resistance and flexibility and exhibits a reduced "luster reappearance".
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: November 6, 1990
    Assignee: Du Pont-Mitsui Polychemicals Co., Ltd.
    Inventors: Manabu Kawamoto, Yasuhisa Hosoai, Eisaku Hirasawa
  • Patent number: 4968765
    Abstract: Disclosed is a molecularly oriented molded body of an ultra-high-molecular-weight ethylene/polyene copolymer having an intrinsic viscosity (.eta.) of at least 5 dl/g and such a content of a polyene that the number of molecules of the polyene is 0.01 to 15 on the average per 1000 carbon atoms, wherein the molded body shows at least two crystal fusion endothermic peaks when the measurement is conducted in the restraint state by using a differential scanning calorimeter, the molded body has at least one crystal fusion endothermic peak (Tp) at a temperature higher by at least 20.degree. C. than the inherent crystal fusion temperature (Tm) of the ultra-high-molecular-weight ethylene/polyene copolymer determined as the main fusion endothermic peak at the time of the second elevation of the temperature, and the quantity of heat based on said crystal fusion endothermic peak (Tp) is at least 15% based on the total fusion heat quantity.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: November 6, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kazuo Yagi, Akinori Toyota
  • Patent number: 4968363
    Abstract: A highly corrosion-resistant amorphous alloy composed of ni-- 15-80 atomic % Ta Ni-- 30-80 atomic % Ta, or Ni-- 20-50 atomic % Ta-- 10-23 atomic % P, with a specific amount of optional elements of Ti, Zr, Nb, W, Fe, Co, Cr, P, B, Si, or C.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: November 6, 1990
    Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., Koji Hashimoto
    Inventors: Koji Hashimoto, Kazuo Shimamura, Asahi Kawashima, Katsuhiko Asami
  • Patent number: 4968762
    Abstract: This invention provides thermosetting-resin-forming compositions which are formed of (a) a bismaleimide compound represented by the following formula: ##STR1## wherein R represents a divalent group of ##STR2## X being a direct bond or a group selected from the group consisting of divalent hydrocarbon groups having 1-10 carbon atoms, hexa-fluorinated isopropylidene, carbonyl, thio, sulfinyl, sulfonyl and oxo, and (b) a specific diallylbisphenol compound. These compositions can provide thermosetting resins having high cracking resistance due to improved impact resistance and toughness and low water absorption.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: November 6, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
  • Patent number: 4968341
    Abstract: Novel substituted aryloxyureas, processes for their production, and herbicides comprising them as active ingredients are provided.The substituted aryloxyureas exhibit an excellent herbicidal efficacy against weeds when applied, for example, to the weeds in a wide range of period from a preemergence stage to a growth stage.The substituted aryloxyureas of the invention have the excellent advantage of maintaining high safety on crops or crop plants in spite of their herbicidal efficacy.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: November 6, 1990
    Assignees: Kumiai Chemical Industry Co., Mitsui Petrochemical Industries, Ltd.
    Inventors: Isao Hashimoto, Tatsuyodihi Ishida, Kazutaka Tsuru, Yuji Yamada, Takeshige Miyazawa, Yasuo Nakamura, Susumu Katou, Katsuya Takahashi
  • Patent number: 4966266
    Abstract: An actuator for automobile comprises a speed reduction mechanism having an input side connected to a motor and an output side provided with an engagement section, a first rotor provided with a predetermined rotational resistance, at least one engagement rod slidably provided in the first rotor, inwardly biased by a spring providing a spring force weaker than the force of the rotational resistance and outwardly projected with an inner end in engagement with engagement section with rotation of the reduction mechanism, and a second rotor with an engagement piece to engage with the free end of the engagement rod with outward projection thereof and connected to a door lock device or the like. When the motor is rotated, the reduction mechanism and second rotor are coupled together directly via the engagement rod. When the motor is stopped, the second rotor and engagement rod are disengaged from each other.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: October 30, 1990
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Shinjiro Yamada, Seiki Satoh
  • Patent number: 4966982
    Abstract: Disclosed is a process for the production of highly pure lactide, especially having a sufficiently high purity to be usable as a raw material for the synthesis of polymers, by heating a 2-halopropionate in a non-aqueous solvent.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: October 30, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hiroshi Ono, Heng Phala
  • Patent number: 4966977
    Abstract: A process for the preparation of an indigo compound by reacting an indole compound having no substituent at the 2- and 3-positions with hydrogen peroxide in a liquid phase composed of at least two separate phases including an organic phase containing the indole compound and an aqueous phase containing hydrogen peroxide, or by reacting the indole compound with hydrogen peroxide in solution in an organic solvent.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: October 30, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Usaji Takaki, Shinobu Aoki, Yoshihiro Yamamoto, Isao Hara