Patents Assigned to Mitsui
  • Patent number: 6287632
    Abstract: A process for rotolining a cylindrical article is provided, wherein the rotolining powder contains both fluoropolymer and filler and has a particle size of 70-1000 micrometers, and the cylindrical article (surface being lined) is rotated at a speed of at least 100 m/sec2 while heating the powder to press the powder against the surface being lined to thereby form the lining.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: September 11, 2001
    Assignee: DuPont Mitsui Flurochemical
    Inventors: Takao Nishio, Tsuneo Aida
  • Publication number: 20010019780
    Abstract: An object of the present invention is to provide a technology for preventing wrinkles on metal foils such as nickel, tin, cobalt, chromium and iron from being generated in order to facilitate their handling. The object is accomplished by using a carrier foil manufactured by bonding a carrier foil layer with a metal foil layer via an organic adhesive interface layer, wherein a metal foil layer comprising one of nickel, tin, cobalt, chromium, lead, iron and zinc, or an alloy as a combination of two or more of them or an alloy of them is used for the metal foil with carrier.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 6, 2001
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Shin-ichi Obata, Makoto Dobashi, Takashi Kataoka
  • Patent number: 6284857
    Abstract: Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous propylene units wherein directions of &agr;-methyl carbons are the same as each other), and a process for preparing said polymer. Further disclosed is a propylene polymer composition comprising the above propylene polymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene polymer of the invention is excellent in rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 4, 2001
    Assignee: Mitsui Chemical, Inc.
    Inventors: Tetsunori Shinozaki, Kazumitsu Kawakita, Mamoru Kioka
  • Patent number: 6284423
    Abstract: Urethane modified polyester resin which has a total acid value not greater than 10 KOH mg/g and has been obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a low-molecular-weight polyester resin (B) having an acid value not greater than 5 KOH mg/g, a hydroxyl value not greater than 10 KOH mg/g and a weight-average molecular weight of 3,000 to 5,000 and a polyisocyanate compound, by using the components (A) and (B) at a weight ratio of 3 to 5:7 to 5 and the polyisocyanate compound in an amount of 0.2 to 1.2 equivalent, in terms of an isocyanate group per equivalent, of the total hydroxyl groups of all the resins. This novel urethane-modified polyester resin (C) is used as a binder resin for the toner. For the preparation of the toner, the resin is mixed and kneaded with a colorant, magnetic powders, charge control agent and the like under a molten state, followed by cooling and pulverization.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: September 4, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hiroshi Maekawa, Kazuo Hisamatsu, Yuji Emura, Koichi Ogawa, Katsuhiko Mizushima
  • Patent number: 6285699
    Abstract: On an n-GaAs substrate are sequentially formed an n-GaAs buffer layer, an n-AlGaAs cladding layer, a non-doped InGaAs active layer, a p-AlxGa1−xAs cladding layer, a p-GaAs contact layer, and further an n-AlGaAs current blocking layer having a stripe-like window is embedded in the cladding layer. At the active layer side interface of the current blocking layer, a diffraction grating of cyclic bumps and dips shape is formed, but the diffraction grating is not formed in a region of the stripe-like window where the current blocking layer is not present, i.e., a current injection region. In this way, a semiconductor laser device of low oscillation threshold, high oscillation efficiency, high reliability, long life time, and stabilized oscillation wavelength can be realized.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: September 4, 2001
    Assignee: Mitsui Chemicals Inc.
    Inventors: Yumi Naito, Satoru Okada, Tsuyoshi Fujimoto
  • Patent number: 6283531
    Abstract: A vehicle comprises a vehicle body, an electric folding roof housed in the vehicle body in a folded state, an electric motor operate to unfold the folded electric folding roof, and a rigid roof designed to be attached to the vehicle body when the electric folding roof is folded and housed in the vehicle body. The vehicle also includes an inhibiting device for inhibiting operation of the electric motor upon detection of the attachment of the rigid roof to the vehicle body. With this arrangement, it becomes possible to prevent unfolding of the folded electric folding roof when the rigid roof is attached to the vehicle body. This leads to the further advantage that failure of the motor can be prevented.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: September 4, 2001
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Tanigawa, Masanobu Shinoda, Jun Odahara, Tsuguo Hoshikawa
  • Patent number: 6284209
    Abstract: An agent for treating an exhaust gas, which is a mixture of a solid metal oxide and a solid metal carbonate as a main component, the metal being selected from the group of metal elements consisting of Mn, Fe, Ni, Cu and Zn. The agent is made of a molded article obtained by granulation, pelletization or extrusion of the mixture, and can be used in a process of treating an exhaust gas, capable of reducing the concentration of the exhaust gas containing a low concentration of a metal hydride gas and/or an organometallic gas to at least 0.5 ppm or lower.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: September 4, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Isao Harada, Sadaichi Komohara
  • Patent number: 6281318
    Abstract: There are herein disclosed a poly{1-(1-alkoxyalkoxy)-4-(1-methylethenyl)benzene} having a narrow molecular weight distribution, for example, a poly{1-(1-alkoxyethoxy)-4-(1-methylethenyl)benzene} or a poly{1-(2-tetrahydrofuranyloxy)-4-(1-methylethenyl)benzene} which is useful as a chemical amplification type positive resist material; a preparation process of the polymer which comprises reacting industrially easily available 4-(1-methylethenyl)phenol with a vinyl ether to produce an alkoxyalkoxy compound, and then carrying out an anionic polymerization; and a preparation process of poly{4-(1-methylethenyl)phenol} having a narrow molecular weight distribution useful as a tease polymer for a chemical amplification type positive resist material which comprises reacting the above-mentioned polymer with a protonic acid in the presence of an organic solvent.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: August 28, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yoshihiro Yamamoto, Toshiro Takao, Ritsuko Fukuda, Isao Hara
  • Patent number: 6276913
    Abstract: In the surface of a lower die 104 in a resin sealing mold, a region where an external leads 18 of a lead frame 12 and its peripheral regions having a width of 0.1 mm are mirror-finished to form a mirror-face region 22. The other region than the mirror-face region is subjected to discharging processing to form a satin-finished region 24. The resin-sealing mold having such a structure permits a package to be smoothly released and prevents resin from remaining.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: August 21, 2001
    Assignee: Mitsui High-Tech Inc.
    Inventors: Masanori Mitsui, Masanori Mikawa
  • Patent number: 6277468
    Abstract: The present invention provides a paper-laminated metal sheet having a structure in which at least one sheet of paper is laminated on at least one side of a metal plate via a pressure sensitive adhesive agent or an adhesive agent layer, and a protective layer is formed on a top surface of the paper-laminated side. With this structure, the paper-laminated metal sheet can be processed without wetting the paper with water, while thereby preventing the paper from being torn. In addition, the aesthetic appearance derived from the paper is kept for a long period of time. Due to high strength and processability derived from the metal base material, and high aesthetic appearance unbelievable for a metal plate derived from the paper, the paper-laminated metal sheet is valuable in various applications as a novel material.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: August 21, 2001
    Assignee: Mitsui Bussan Construction Materials Co., LTD
    Inventors: Tadashige Nakamoto, Hideki Nakamura, Takeshi Kii, Noboru Kishida, Koji Ishimoto, Mitsuo Ikeda
  • Patent number: 6278937
    Abstract: Disclosed is a system for controlling the position of a floating rig that permits holding the rig at a position optimum to an excavation riser even if a position signal of the floating rig is not received, provided that the angles of inclination at the upper and lower ends of the riser are detected. In the method of controlling the position of a floating rig, the floating rig 10 is joined to a well head 14 at the sea bottom by an excavation riser 16, and the rig 10 is driven to a corrected position by thrusters or a combination of thrusters and a propulsion system. A neural network is allowed to learn in advance the position information of the floating rig accompanying the behaving characteristics of the excavation riser.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: August 21, 2001
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Shigeki Ishida, Susumu Tanaka
  • Publication number: 20010014408
    Abstract: An object of the invention is to provide a surface-treated copper foil capable of consistently attaining a percent loss in peel strength in resistance against hydrochloric acid degradation of 10% or less as measured on a copper pattern prepared from the copper foil and having a line width of 0.2 mm, by bringing out the maximum effect of the silane coupling agent employed in copper foil coated with an anti-corrosive layer formed of a zinc-copper-tin ternary alloy. Another object is to impart excellent moisture resistance and heat resistance to the surface-treated copper foil.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining & Smelting Co. Ltd.
    Inventors: Masakazu Mitsuhashi, Takashi Kataoka, Naotomi Takahashi
  • Publication number: 20010014406
    Abstract: An object of the invention is to provide a surface-treated copper foil capable of consistently attaining a percent loss in resistance against hydrochloric acid degradation of 10% or less as measured on a copper pattern prepared from the copper foil and having a line width of 0.2 mm, by bringing out the maximum effect of the silane coupling agent employed in copper foil coated with an anti-corrosive layer formed of a zinc-copper-nickel ternary alloy. Another object is to impart excellent moisture resistance to the surface-treated copper foil.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masakazu Mitsuhashi, Takashi Kataoka, Naotomi Takahashi
  • Publication number: 20010014410
    Abstract: An object of the invention is to provide a surface-treated copper foil capable of consistently attaining a percent loss of peel strength in resistance against hydrochloric acid degradation of 10% or less as measured on a copper pattern prepared from the copper foil and having a line width of 0.2 mm, by bringing out the maximum effect of the silane coupling agent employed in brass-plated anti-corrosive copper foil. The Another object is to impart excellent moisture resistance to the surface-treated copper foil.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masakazu Mitsuhashi, Takashi Kataoka, Naotomi Takahashi
  • Publication number: 20010014407
    Abstract: An object of the invention is to provide a surface-treated copper foil capable of consistently attaining a percent loss in peel strength against hydrochloric acid degradation of 10% or less as measured on a copper pattern prepared from the copper foil and having a line width of 0.2 mm, by bringing out the maximum effect of the silane coupling agent employed in zinc-plated or zinc-alloy-plated anti-corrosive copper foil. Another object is to impart excellent moisture resistance, heat resistance, and long-term storage stability to the surface-treated copper foil.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Masakazu Mitsuhashi, Takashi Kataoka, Naotomi Takahashi
  • Publication number: 20010014573
    Abstract: A method for preparing a glass substrate for magnetic recording mediums comprises the steps of lapping a glass substrate, then chemically treating the glass substrate for strengthening to form a strengthening layer having a thickness of not less than 20 &mgr;m and polishing the chemically strengthened glass substrate so that not less than 10 &mgr;m of the strengthening layer on the main face is removed, while leaving not less than 10 &mgr;m of the strengthening layer on the main surface of the glass substrate. The method for preparing a glass substrate for magnetic recording mediums permits the easy preparation of such glass substrates having excellent flatness and excellent surface smoothness and also permits the marked improvement of the rate of machine operation and production efficiency.
    Type: Application
    Filed: April 5, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hideyuki Shimoi, Hiroshi Miura, Tomoyoshi Uchigaki
  • Publication number: 20010013263
    Abstract: Nickel powder herein disclosed has an average particle size, as determined by the observation with SEM, of not more than 1 &mgr;m, a particle density of not less than 8.0 g/cm3, and an average diameter of crystallites present in the nickel particles of not more than 550 Å. Moreover, a conductive paste for a multilayer ceramic capacitor comprises the foregoing nickel powder. The nickel powder and the conductive paste containing the same can control heat shrinkage while inhibiting any rapid oxidation and permit the production of a thin, uniform internal electrode for a multilayer ceramic capacitor without being accompanied by any crack formation and delamination during firing.
    Type: Application
    Filed: February 2, 2001
    Publication date: August 16, 2001
    Applicant: Mitsui Mining and Smelting Co., Ltd.
    Inventors: Yasuhide Yamaguchi, Takao Hayashi
  • Patent number: 6274196
    Abstract: A spherical object transport apparatus of the invention brings a spiral stream into contact with a first atmosphere containing a spherical object, selectively sucks the first atmosphere outward so as to engulf in the spiral stream for diffusing the first atmosphere outward, guides the spherical object so that the spherical object passes through the center of the transport apparatus, supplies a second atmosphere to the spherical object, and sends the spherical object together with the second atmosphere to the following step.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: August 14, 2001
    Assignees: Mitsui High-Tec INC, Nippon Pneumatics/Fluidics System Co., Ltd.
    Inventors: Katsumi Amano, Tashiro Arai
  • Patent number: 6273791
    Abstract: A method of producing a semiconductor wafer, which can prevent the breakage of a wafer, and also can reduce the working time in a series of operations attended by back surface grinding of the semiconductor wafer. The method involves producing a semiconductor wafer wherein an adhesive tape is applied on the surface of the semiconductor wafer and, after grinding the back surface of the semiconductor wafer using a grinding machine, the adhesive tape is peeled off, said process comprises using an adhesive tape having heat shrinkability as the adhesive tape, grinding the back surface of the semiconductor wafer and heating the adhesive tape in the grinding machine, thereby peeling off the adhesive tape from the surface of the semiconductor wafer.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: August 14, 2001
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Makoto Kataoka, Yasuhisa Fujii, Kentaro Hirai, Hideki Fukumoto
  • Patent number: 6274678
    Abstract: Disclosed are a propylene block copolymer containing a crystalline polypropylene portion having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain, and a process for preparing said copolymer. Further disclosed is a propylene polymer composition comprising the above propylene block copolymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene block polymer of the invention is well-balanced between rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, filament, injection molded product, blow molded product, etc.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: August 14, 2001
    Assignee: Mitsui Chemicals INC
    Inventors: Tetsunori Shinozaki, Kazumitsu Kawakita, Mamoru Kioka