Patents Assigned to Mitsui
  • Patent number: 3950295
    Abstract: A hardenable molding composition comprising hydratable gypsum, a vinyl monomer, a source of hydrogen sulfite ions and water is disclosed. With this molding composition a hardened product can be obtained having high strength due to the combined effect of the hydraulic reaction of the gypsum and the polymerization reaction of the vinyl monomer.
    Type: Grant
    Filed: February 1, 1974
    Date of Patent: April 13, 1976
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadashi Yamaguchi, Takayuki Ono, Hiroshi Hoshi
  • Patent number: 3948201
    Abstract: The position of a ship moored by at least three anchor ropes extending between the ship and independent remote anchor points is corrected by a control system comprising a rope orientation angle detector, a device for designating the angle and amount of movement of the ship which are necessary to correct the position of the ship, a position correction parameter designating device which determines whether parallel movement or swinging movement is to be made to correct the position of the ship and sends the result of determination to the rope orientation angle detector, a deviation operator which compares the angle of movement with the rope orientation angle for producing an output corresponding to the differential angle, a rope extension and contraction control device responsive to the outputs from the deviation operator and the rope orientation angle detector for producing an output for commanding paying out or taking up of respective anchor ropes, and winches mounted on the ship for operating respective ancho
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: April 6, 1976
    Assignee: Mitsui Shipbuilding & Engineering Co., Ltd.
    Inventors: Isamu Takeda, Ietoshi Yamura, Shojiro Yamada, Yoshio Seki
  • Patent number: 3946854
    Abstract: A method of transporting objects wherein when the presence of one or more object is detected in a first stock apparatus, a transfer apparatus adapted to transport objects picks up one of the objects from said first stock apparatus and transports it towards a second stock apparatus, and only when the presence of a space for mounting such objects in said second stock apparatus is detected, said transfer apparatus transfers said object onto said second stock apparatus.
    Type: Grant
    Filed: February 14, 1974
    Date of Patent: March 30, 1976
    Assignees: Mitsui Mining & Smelting Co., Ltd., Fuji Sangyo Co., Ltd.
    Inventors: Hiromitsu Kojima, Kimio Yoshida
  • Patent number: 3947326
    Abstract: Vertical tube type cracking furnace in which a convection-heating section for preheating the process fluid is provided above the combustion chamber, and gas passages connecting the convection-heating section and the combustion chamber are symmetrically provided.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: March 30, 1976
    Assignee: Mitsui Shipbuilding & Engineering Co. Ltd.
    Inventors: Noriaki Nakase, Yoshiaki Nagamine
  • Patent number: 3946363
    Abstract: In a simulator of the class which is operated repeatedly according to the same program there are provided a mini-computer, a time axis controller and a communicating device. The time axis controller provides a pulse to the mini-computer for controlling the timing of the programmed processing operation thereof and is provided with means for manually varying the period of the pulse thereby to vary the timing of the programmed processing operation while observing the content of the display provided by the communicating device.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: March 23, 1976
    Assignee: Mitsui Shipbuilding & Engineering Co., Ltd.
    Inventor: Hiroshi Hakozaki
  • Patent number: 3945947
    Abstract: A multi-component catalyst composition prepared by combining (A) noble metal catalyst elements effective for oxidizing carbon monoxide and hydrocarbons with (B) catalyst elements effective for the same purpose but containing no noble metal. The multi-component catalyst composition is effective in purifying exhaust gases containing nitrogen oxides, carbon monoxide and hydrocarbons by converting these harmful components into harmless components.
    Type: Grant
    Filed: January 8, 1973
    Date of Patent: March 23, 1976
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Toshiyuki Sakai, Kazuhide Miyazaki, Michiaki Yamamoto
  • Patent number: 3944530
    Abstract: Articles such as containers made of a crystalline olefin polymer having improved transparency and impact strength obtained by biaxially extending an extruded tubular body of said polymer at an orientation temperature below the melting point to attain an extension magnification ratio of at least 1.5 for each of longitudinal and lateral directions wherein said polymer is a statistical random copolymer of propylene and from 0.3% to 5.0% by weight ethylene having a melt index of 0.6 - 3.0 g/10 min. Optionally, from 0.03 to 0.20 part by weight of aluminum p-tert-butyl benzoate or sodium p-tert-butyl benzoate are added to 100 parts by weight of said copolymer.
    Type: Grant
    Filed: September 17, 1974
    Date of Patent: March 16, 1976
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Yasunori Sugita, Yasuhiko Itagaki
  • Patent number: 3944995
    Abstract: A device for detecting short-circuit between electrodes in electrolytic cells constituting an electrolytic plant in which a plurality of switch elements turned on and off under control of an external magnetic field are disposed to be vertically movable toward and away from the current collecting end portions of the individual anodes or cathodes in the electrolytic cells. These switch elements are moved downward to detect occurrence of short-circuit between the electrodes in one of the electrolytic cells, and when no short-circuit is detected in this electrolytic cells, the switch elements are automatically conveyed to the detecting position on the next electrolytic cell.
    Type: Grant
    Filed: May 20, 1975
    Date of Patent: March 16, 1976
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Takeshi Kobayashi, Yoshiharu Tanaka
  • Patent number: 3944605
    Abstract: Unreacted ammonium carbamate contained in urea synthesis effluent obtained by reacting ammonia and carbon dioxide at urea synthesis pressures and temperatures is recovered by a method comprising subjecting the urea synthesis effluent to a three-stage decomposition to decompose the unreacted ammonium carbamate in each stage, the first stage and the second stage of which are operated at a gauge pressure of at least 30 kg/cm.sup.2 and a gauge pressure of from 10 to 25 kg/cm.sup.
    Type: Grant
    Filed: January 28, 1974
    Date of Patent: March 16, 1976
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Shigeru Inoue, Tetsuo Kimura
  • Patent number: 3943119
    Abstract: Tuberculin active simple proteins and peptides which have the following peptide linkage--Asn--Gly--Ser--Gln--Met--as a tuberculin active functional group, and a process for preparing the same from the cells of tubercle bacilli.
    Type: Grant
    Filed: March 28, 1974
    Date of Patent: March 9, 1976
    Assignee: Mitsui Pharmaceuticals, Incorporated
    Inventors: Toru Tsumita, Seishi Kuwabara
  • Patent number: 3941688
    Abstract: A method for the separation of a mixture of a polyester and a cellulose derivative comprising introducing gas bubbles into an aqueous liquid medium containing the mixture of the polyester and the cellulose derivative, optionally in the presence of at least one wetting agent and at least one flotation agent thereby separating the mixture by flotation into the polyester and the cellulose derivative.
    Type: Grant
    Filed: May 14, 1974
    Date of Patent: March 2, 1976
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Kozo Saitoh, Sumio Izumi
  • Patent number: 3941837
    Abstract: A method of purifying an aqueous solution of acrylamide, which has been formed by reacting acrylonitrile with water in the presences of the metallic copper catalyst, and which contains cuprous ions, comprising treating said aqueous solution in a reaction zone which is substantially free of an oxygen containing gas or liquid.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: March 2, 1976
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Shiro Asano, Kiyotaka Yoshimura, Masao Hashimoto
  • Patent number: 3941681
    Abstract: A process for converting inferior heavy oil into light oil and gasifying the same characterized in that a hydrocracking zone comprising coke fluidized bed and a gasification zone comprising a molten alkali salt are provided, the raw oil is fed in said hydrocracking zone to be hydrocracked and produce coke to form a fludized bed, and a part of the raw oil is fed in said gasification zone for obtaining the fluidizing gas.
    Type: Grant
    Filed: December 11, 1974
    Date of Patent: March 2, 1976
    Assignee: Mitsui Shipbuilding and Engineering Co., Ltd.
    Inventors: Hitoshi Saegusa, Masami Yoshitake
  • Patent number: 3941115
    Abstract: An engine cover removably secured to the cylinder head of an internal combustion engine for housing suction and exhaust valves and a valve operating mechanism is provided with an arm which is pivotally connected to a stationary support located close to one side of the engine so that the cover can be rotated or shifted in the lateral direction.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: March 2, 1976
    Assignees: Mitsui Shipbuilding and Engineering Co., Ltd., Japan Ship's Machinery Development Association
    Inventors: Naoyashi Tshida, Atsushi Watanabe, Yukio Ishii
  • Patent number: 3940541
    Abstract: In the production of decorative gypsum board, wherein a hemihydrate gypsum slurry is continuously injected between decorative gypsum board card paper and conventional gypsum board card paper and the thus slurry-injected sheets are pressed by a suitable means to form the sheets in a predetermined thickness and then dried to form the decorative gypsum board, the improvement comprising coating with an urethane resin solution over decorative low-weight basis paper such as tissue paper or machine glazed white paper, drying the coated paper and laminating the resultant paper to a gypsum board card paper to obtain said decorative gypsum board card paper.
    Type: Grant
    Filed: June 6, 1973
    Date of Patent: February 24, 1976
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Shinsaku Kanatsu, Akira Takahara
  • Patent number: 3939079
    Abstract: A filter medium which permits an increased amount of filtration. The filter medium can be prepared by blending 100 parts by weight of aggregate particles, 5-18 parts by weight of an inorganic bonding material having a chemical composition of about 10-50% by weight of SiO.sub.2 and about 5-20% by weight of B.sub.2 O.sub.3 and containing at least 70% by weight of a non-vitreous substance such as talc or boric acid, and about 3-15 parts by weight of a combustible substance such as wheat flour, kneading the mixture with a caking material and water, molding the kneaded mixture, drying it, and then calcining the dried mixture at a temperature not lower than about 1100.degree.C. The size and number of the air-permeable pores in the filter medium can be controlled by adjusting the amounts of the bonding material and combustible substance.
    Type: Grant
    Filed: May 15, 1973
    Date of Patent: February 17, 1976
    Assignees: Mitsui Mining & Smelting Co., Ltd., Tokyo Kokyu Rozai Co., Ltd.
    Inventors: Hiroshi Uchiyama, Kazunobu Kakimoto, Yoshio Fujiwara, Shigeru Yamagishi, Junshiro Hayakawa
  • Patent number: 3939131
    Abstract: A copolymer of 2,4-dimethyl-4-vinyl-1-cyclohexene and at least one member of the group consisting of 2,6- and 3,6-dimethyl-1,3,6-octatrienes, which copolymer is suitable for use as a tackifier, said copolymer consisting essentially of (A) structural units derived from 2,4-dimethyl-4-vinyl-1-cyclohexene and (B) structural units derived from at least one member selected from the group consisting of 2,6- and 3,6-dimethyl-1,3,6-octatriene in proportions of 100 moles of (A) to 1 to 400 moles of (B) and characterized by containing not more than seven unsaturated double bonds per 100 carbon atoms contained in its molecule and having a softening point of 85.degree.-160.degree.C. and an average molecular weight of 450-1850 is disclosed.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: February 17, 1976
    Assignee: Mitsui Petrochemical Industries, Inc.
    Inventors: Hiroyuki Morikawa, Tosio Sugimoto, Kazuo Sato
  • Patent number: 3938972
    Abstract: An impingement separator for gas-liquid mixtures, in which at least two separating elements are spaced apart and held upright substantially in parallel to each other so as to provide a passage or passages for liquid-carrying gases. Each element consists of two outer plates bent in a zigzag fashion and spaced in a substantially parallel fashion with horizontal slits formed in the plate portions where the direction of the flow along the plate surfaces is deflected, and a bent inner plate intervening between the outer plates thereby defining liquid passages each facing one of the slits, so that an upward or downward stream or streams of the mixture impinge upon the baffling sections of the outer plates and the liquid is thereby separated out into the liquid passages through the slits and is collected away from the fluid.
    Type: Grant
    Filed: September 5, 1973
    Date of Patent: February 17, 1976
    Assignee: Mitsui Shipbuilding and Engineering Co., Ltd.
    Inventor: Shojiro Sugimura
  • Patent number: 3933633
    Abstract: A method for separating vinyl chloride from a mixture of vinyl chloride with other non-plastic substances such as sand and soil, metals, glass or rubbers which comprises introducing gas bubbles into a dispersion of the vinyl chloride mixture in an aqueous liquid medium such as water or salt water and containing a flotation agent such as pine oil thereby to float the vinyl chloride and collect it.
    Type: Grant
    Filed: May 14, 1974
    Date of Patent: January 20, 1976
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Kozo Saitoh, Sumio Izumi
  • Patent number: 3933928
    Abstract: 2,6-DI-TERT.-BUTYL-4-CUMYL PHENOL IS PRODUCED BY REACTING P-CUMYL PHENOL WITH ISOBUTYLENE, AT A REACTION TEMPERATURE OF FROM 40.degree. TO 120.degree.C. in the presence of from 0.01 to 20% by weight of p-toluene sulfonic acid based on the weight of the p-cumyl phenol. Isobutylene is charged into the reaction system at a high rate and is always present in the reaction system during the reaction. A substantially 100% conversion of p-cumyl phenol is attained and the weight ratio of 2,6-di-tert.-butyl-4-cumyl phenol/2-tert.-butyl-4-cumyl phenol in the reaction product is greater than 10, while splitting off of the cumyl group at the para position is suppressed.
    Type: Grant
    Filed: August 21, 1974
    Date of Patent: January 20, 1976
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kunio Hanauye, Tsutomu Takase, Mitsuhiro Iwasa, Mizuo Ito