Patents Assigned to Mitsui
  • Patent number: 5185017
    Abstract: Disclosed is a gas-liquid contact apparatus wherein trays are disposed in the form of column plates inside a column, a cap having a cover but not bottom and equipped with a large number of guide blades at its side portion is disposed at the hole portion of each tray and a large number of outflow ports are so disposed as to be positioned below the liquid surface of the liquid held on the tray, characterized in that a large number of side holes positioned between the lower end of the guide blades and the liquid surface on the tray are disposed at the side portion of the cap.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: February 9, 1993
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Shogo Tanigawa, Takeshi Yokoyama, Yoshikazu Izawa
  • Patent number: 5183927
    Abstract: In preparing an iodoalkynyl carbamate by iodinating an alkynyl carbamate with iodine monochloride in water or a solvent mixture composed of water and an organic solvent in the presence of a base, the iodoalkynyl carbamate can be obtained in a yield of as high as 96 to 98% by using the alkynyl carbamate in a concentration of 5 to 20% by weight, dissolving the iodine monochloride in an aqueous solution of hydrochloric acid or an aqueous solution of an alkali metal chloride (the amount of iodine monochloride used being within the range of 1.0 to 1.2 moles per mole of the alkynyl carbamate and the amount of base used being within the range of 0.95 to 2.00 gram equivalents per mole of iodine monochloride), and carrying out the reaction at a temperature of 10.degree. to 40.degree. C. for a period of 1 to 4 hours.According to this process, highly pure iodoalkynyl carbamates which are useful as industrial germicides can be prepared with good selectivity and in high yield.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: February 2, 1993
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Atsushi Utsunomiya, Mitsuo Nakamura, Toshiaki Kuwatsuka, Yoshinori Tanaka
  • Patent number: 5183638
    Abstract: An immunity analysis apparatus for use with magnetic particles in which a sample is transferred to a reaction vessel and the reaction vessel is conveyed past several devices for adding and agitating a magnetic particle solution, adding a stroma solution, absorbing the particles to an inner wall of the reaction vessels to remove the reaction solution, adding an enzyme labelling antibody solution, absorbing the particle on an inner wall a second time to remove the resulting solution, adding a stop solution, measuring the result, and cleaning the reaction vessels for a reuse. The device additionally has structure for agitating the magnetic particle reagent solution containers and moving a pipet arm independent of an L-shaped agitating rod arm during a portion of its movement to supply the reaction vessels with the magnetic particle solution.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: February 2, 1993
    Assignees: Kabushiki Kaisha Nittec, Mitsui Pharmaceuticals, Inc.
    Inventor: Koichi Wakatake
  • Patent number: 5183843
    Abstract: A polyamide resin composition which comprises: (A) an aromatic polyamide resin comprising preferably a terephthalic acid component and a diamine component comprising at least one of an aliphatic diamine component and an alicyclic diamine component; (B) a fibrous reinforcement; and (C) at least one additive selected from the group consisting of a salt of the group I, II and III metals of the periodic table of a higher fatty acid salt and an acid ester, a partially saponified ester and a metal salt of an aliphatic carboxylic acid of 26-32 carbons.The resin composition is of high fluidity and mold-releasing properties as well as of high heat resistance and rigidity, so that the composition can be molded with decomposition of the resins.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: February 2, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideki Sakai, Kazuo Ishiwatari, Fumitoshi Ikejiri
  • Patent number: 5183754
    Abstract: A method for the production of human tissue type plasminogen activator (human t-PA) using cells is disclosed. The method comprises producing the human t-PA in parallel with the growth of the cells or after the cells have been grown. To the cell culture bicarbonate ion is added at a concentration equivalent to 3 to 10 g/l of NaHCO.sub.3 based on the true volume of the medium to increase the osmotic pressure of the medium to a range of 350 to 520 milliosmoles/liter.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: February 2, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Shoichiro Miyahara, Atsunori Shindo, Maki Suzuki, Nobumi Kusuhara, Nobuyoshi Makiguchi
  • Patent number: 5183647
    Abstract: NF.sub.3 gas containing N.sub.2 F.sub.2 as an impurity is purified by heating said NF.sub.3 gas at specified temperatures in a vessel the inner wall of which is coated with a strong and passive film of nickel flouride. According to this method, the rate of NF.sub.3 loss is low and the rate of removing N.sub.2 F.sub.2 is high. Therefore, when the NF.sub.3 gas thus purified is further purified with a known adsorbent, a highly pure NF.sub.3 gas can be easily and safely produced which is suitable for materials for semiconductor dry etching agents and the like.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: February 2, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Isao Harada, Hisashi Hokonohara, Toshiaki Yamaguchi
  • Patent number: 5183474
    Abstract: Described herein are heat-sensitive sublimation transfer cyan dyes represented by the following formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, an alkoxyl group, an alkylcarbonylamino group, a formylamino group or a halogen atom, R.sub.2 and R.sub.3 represent an alkyl group, an alkenyl group, an alkoxyalkyl group, an aralkyl group, an aryl group, a halogenoalkyl group or a cyanoalkyl group or are coupled together to form a ring, and X represents any one of the following groups: ##STR2## Heat-sensitive sublimation transfer sheets containing one or more dyes selected from the group of the above dyes are also described.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: February 2, 1993
    Assignee: Mitsui Toatsu Chemicals Inc.
    Inventors: Tsukasa Ohyama, Yasushi Shimokawa, Isamu Ghoda, Keisuke Takuma, Hitoshi Koshida
  • Patent number: 5183699
    Abstract: The present invention relates to a wafer processing film used for the prevention of breakage upon grinding a semiconductor wafer. The wafer processing film has a base film an adhesive layer provided on one surface of the base film and a synthetic resin film arranged on the adhesive layer. The surface roughness of the surface of the synthetic resin film in contact with the adhesive layer is not greater than 2 .mu.m.The present invention provides a wafer processing film which can protect the surface of a wafer from contamination and corrosion after grinding the wafer.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: February 2, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Yasuo Takemura, Osamu Narimatsu, Kazuyoshi Komatsu
  • Patent number: 5181754
    Abstract: A vehicular door lock device comprises a body having on its front side a guide groove for receiving a striker and on its rear side a raised portion for defining the guide groove, a latch, a ratchet engaged with the latch, outer and inner levers connected to outer and inner handles of the door respectively, a locking lever connected to a key, an outer link placed between the locking lever and the open lever and changed to an unlocked position and a locked position when the locking lever rotates, an inner link conencted to the inner lever so as to release the ratchet from the latch when the inner lever rotates irrespective of a locked condition. The outer link and the locking lever are connected through an intermediate link. A back plate is fixed to the rear side of the body.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: January 26, 1993
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Thoru Shibata
  • Patent number: 5182409
    Abstract: The present invention is a process for the preparation of bis(1,2-diaryl-1,2-ethylenedithiolato)-nickel-based complex which is characterized by reacting a benzil-based compound or a benzoin-based compound with phosphorus pentasulfide in 1,3-dimethyl-2-imidazolidinone and successively reacting with nickel chloride.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: January 26, 1993
    Assignee: Mitsui Toatsu Chemicals Inc.
    Inventors: Keisuke Takuma, Yoshihiro Irizato, Kimitoshi Katho
  • Patent number: 5182198
    Abstract: A process for preparing (+)-homopilopic acid and the salts thereof which comprises hydrolyzing a mixture of (+)-homopilopic acid ester of the general formula (I): ##STR1## wherein R.sub.1 denotes straight or branched C.sub.1 -C.sub.10 hydrocarbon, and (-)-homopilopic acid ester of the general formula (II): ##STR2## wherein R.sub.2 denotes straight or branched C.sub.1 -C.sub.10 hydrocarbon, in the presence of a microorganism belonging to the genus Arthrobacter, Aspergillus, Escherichia, Cunninghamella, Xanthomonas, Candida, Pseudomonas, Serratia, Cellulomonas, Nocardia, Bacillus, Brevibacterium, Flavobacterium, Mycobacterium, Rhizomucor, Rhodotorula or Rhodococcus, or a treated matter thereof.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: January 26, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Shoichi Kise, Mikio Hayashida, Aiichiro Ori, Junzou Hiratsuka, Hideaki Yamada
  • Patent number: 5181659
    Abstract: A tube having holes formed at precise positions is obtained by preparing a tube in which a substantially black synthetic resin film portion and a synthetic resin film portion substantially having a color other than black are formed alternately in its circumferential direction and then by drilling the black synthetic resin film portion by a laser beam.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: January 26, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventor: Tatsuta Ohe
  • Patent number: 5182395
    Abstract: Disclosed are a novel compound represented by the formula ##STR1## and compositions for sublimation transfer records and for color toners containing the same.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: January 26, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Keisuke Takuma, Tsukasa Ohyama, Akitoshi Igata, Tamio Mikoda, Isamu Ghoda, Hitoshi Koshida
  • Patent number: 5180871
    Abstract: A process for producing a phenol from the steps of:(a) partially hydrogenating a benzene, followed by separating the reaction mixture into respective components of a cyclohexene, a cyclohexane and a benzene;(b) oxidizing or hydrating the separated a cyclohexene into oxygen-containing compounds of a cyclohexane;(c) dehydrogenating the oxygen-containing compounds of a cyclohexane into a phenol;(d) dehydrogenating the cyclohexane separated in step (a) to convert the cyclohexane into a benzene; and(e) returning a part or all of hydrogen formed in steps (c) and (d) back to step (a).
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: January 19, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Fujihisa Matsunaga, Hiroshi Fukuhara, Mitsuki Yasuhara
  • Patent number: 5180620
    Abstract: This invention provides a bulky nonwoven fabric made of thermoplastic resin filaments, which is soft and highly permeable to water and gas and effectively absorbs moisture as well as shocks.A nonwoven fabric according to the invention is made of fiber-like filaments of a thermoplastic resin material and comprises a base cloth layer made having densely distributed holes and a large number of cylindrical projections, each standing from the peripheral edge of one of the holes and made of fiber-like filaments similar to those of the base cloth layer and soft, its height being at least twice as large as the thickness of the base cloth layer.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: January 19, 1993
    Assignees: Mitsui Petrochemical Industries, Ltd., Uni-Charm Corporation
    Inventor: Takayuki Mende
  • Patent number: 5180849
    Abstract: In a process for producing purified terephthalic acid which comprises catalytically oxidizing p-xylene in liquid phase to produce crude terephthalic acid containing 4-carboxybenzaldehyde as a main impurity therein, and treating the crude terephthalic acid with hydrogen in the presence of hydrogenation catalyst in a reaction vessel, thereby to produce purified terephthalic acid containing 4-carboxybenzaldehyde in an amount of fixed range in a stationary manner, there is provided an improvement which makes it possible for the treatment to reach the stationary state promptly after partial exchange of deactivated catalyst for a new one. The improvement comprises feeding into the reactor crude terephthalic acid which contains 4-carboxybenzaldehyde in an amount larger than that in the stationary state of the treatment, and treating the terephthalic acid until the treatment reaches the stationay state.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: January 19, 1993
    Assignee: Mitsui Petrochemnical Industries, Ltd.
    Inventor: Norio Taniguchi
  • Patent number: 5180198
    Abstract: An electric driven type lock device used to a car trunk lid has a striker, a latch, and a ratchet for preventing the latch from reverse-rotating. When the striker reaches its position confronting a U-shaped groove or notch formed in the latch, a motor makes the pressing link rotate forcibly in a closed-lid direction. An electric-driven-condition relief link is connected to the ratchet. When the motor reversely rotates, the electric-driven-condition relief link makes the ratchet leave from the latch. Further, the lock device has a manual relief lever which to lever the pressing link and the ratchet are connected. When the manual relief lever is operated, the pressing link is left from a rotation track of the latch, as well as the ratchet is left from the latch.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: January 19, 1993
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Shuji Nakamura, Mitsuru Tamiya
  • Patent number: 5180768
    Abstract: A composition comprising a polymer of 4-methyl-pentene-1 and a lithopone, an amount of the lithopone being 1 to 70% by weight with respect to a total weight of the polymer and the lithopone. A molded product resulting therefrom has an improved impact strength and an excellent glossiness.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: January 19, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventor: Hiromi Sigemoto
  • Patent number: 5180473
    Abstract: Disclosed is a paper-making process for preparing a paper from a paper stock suspension, which is characterized by adding water-swellable cationic polymer particles optionally together with an acrylamide polymer to the suspension as a retention-improving agent. In the process, the stability of the retention even under high shearing force in the paper-making step is improved, the load for recovery of white water and treatment of waste water drained is reduced and the abrasion of paper-making wires is reduced.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: January 19, 1993
    Assignee: Mitsui-Cyanamid, Ltd.
    Inventors: Kenichi Akune, Naotaka Watanabe, Yukihiro Inomiya, Hiroshi Itoda, Takeo Arai, Reiko Funato
  • Patent number: 5180767
    Abstract: A flame retardant cyclic olefinic polymer composition which comprises[A](a) a cyclic olefinic random copolymer formed from an ethylenic component and a cyclic olefinic component represented by the following general formula [I], or(b) a ring-opened polymer of a cyclic olefinic component represented by the following general formula [I] or a hydrogenated derivative of the polymerwhich copolymer or polymer has a limiting viscosity [.eta.] of 0.01 to 10 dl/g measured in decalin at 135.degree. C. and a softening temperature (TMA) of 70.degree. C. or more; ##STR1## [B] a halogen type flame retardant, [C] an antimony type flame retardant, and[D] polytetrafluoroethylene, and if desired[E] at least one copolymer selected from the amorphous or low crystalline alpha-olefinic copolymer which is formed from at least two alpha-olefins, and an amorphous or low crystalline copolymer which contains as one of monomer constituents styrene or its derivative and has at least one of glass transition temperatures of 0.degree. C.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: January 19, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hideki Sakai, Yohzoh Yamamoto