Patents Assigned to Mitsui
  • Publication number: 20040163482
    Abstract: It is an object to provide an apparatus and method for inspecting a film carrier tape for mounting electronic component, in which film carrier tapes for mounting electronic component provided with a plurality of electronic component mounting portions in multiple stripes in a transverse direction are exactly used and, which can be inspected at a time, so that an inspection efficiency can be enhanced very greatly, and furthermore, the film carrier tapes for mounting electronic component are separated into individual stripes after the inspection and can be taken upon individual reels without a winding shift.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 26, 2004
    Applicant: MITSUI MINING & SMELTING CO., LTD.
    Inventors: Masahiko Yamamoto, Hideaki Kaneko
  • Patent number: 6779820
    Abstract: A latch device for a vehicle tailgate having a main door and a sub door, comprises a latch lever moving from an initial position to an operating position by a contact with a sub latch, a return spring urging the latch lever from the operating position toward the initial position, and a block lever connected to the latch lever. The block lever is displaced to a blocked position where the door-opening of the main door by the main open handle is impossible when the latch lever is restored to the initial position by the return spring and to be displaced to an unblocked position where the door-opening of the main door by the main open handle is possible when the latch lever is moved to the operating position by the contact with the sub latch against the elasticity of the return spring.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: August 24, 2004
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Miki Ogino
  • Patent number: 6780963
    Abstract: The polyamide resin composition of the invention is characterized by having a solder reflow heat-resistant temperature of not lower than 250° C. Since the polyamdie resin composition has low water absorption and is excellent in moldability, heat resistance, shape stability and mechanical strength, it can be suitably used for, for example, automobile parts and electric or electronic parts.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: August 24, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masahiro Sawada, Kunihiro Ohuchi
  • Patent number: 6777491
    Abstract: A multilayered article and vessel, which are superior in the properties, such as shock resistance, rigidity, an ability to barrier against gasoline and interlayer adhesion, and are permissible of being recycled for reuse, comprising a base layer (A1) comprising a polyetylene resin (a1) having an MFR (ASTM D 1238, 190° C., 2160 g) of 0.001 to 0.5 g/10 min. and a density of 0.945 to 0.980 g/cm3, an adhesive layer (A2) comprising a modified etylene/&agr;-olefin copolymer (a2) which is modified by having grafted thereon an unsaturated carboxylic acid or its derivative and has a density of 0.900 to 0.940 and a barriering layer (B) comprising an ethylene/vinyl alcohol copolymer (b), wherein the Izod impact strength (with notch) (ASTM D 256, −40° C.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: August 17, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Hideshi Kawachi, Hiromi Shigemoto, Yuichiro Terashi
  • Patent number: 6776811
    Abstract: The present invention provides a method of examining quality of cerium-based abrasives which can simply determine their grinding characteristics. Specifically, the method employs X-ray diffractometry to examine qualities based on, for example, B/A wherein A and B are peak intensities relevant to LnxOy and LnF3, respectively. The present invention further provides: a method of producing a cerium-based abrasive which can give cerium-based abrasive with specific grinding characteristics; and a cerium-based abrasive which has specific grinding characteristics for specific purposes.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: August 17, 2004
    Assignee: Mitsui Mining & Smelting, Co., Ltd.
    Inventors: Yoshitsugu Uchino, Hidehiko Yamasaki, Kazuaki Takahashi
  • Patent number: 6777108
    Abstract: To control peel strength at an organic release interface between a carrier foil and a copper-microparticle layer which constitute an electrodeposited copper foil with carrier. In the present invention, (1) a barrier copper layer is formed on the release interface layer and copper microparticles are formed on the barrier layer; (2) the anti-corrosion treatment is carried out by use of a plating bath containing a single metallic component or a plurality of metallic components for forming an alloy, the plating bath(s) having a deposition potential less negative than −900 mV (vs. AgCl/Ag reference electrode); and (3) methods (1) and (2) are combined.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: August 17, 2004
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Shin-ichi Obata, Makoto Dobashi
  • Patent number: 6777498
    Abstract: The olefin thermoplastic elastomer of the invention has an islands-sea structure, in which the average particle diameter of the islands phases is not more than 2 &mgr;m, and has a gel fraction ranging from 0.5 to 15% by weight and a quantity of heat of melt at a temperature of 125° C. or below, as measured in a different scanning calorimeter (DSC), of 40% or more of the total quantity of heat of melt. The olefin thermoplastic elastomer can be obtained by melt blending in the presence of a crosslinking agent of a specific amount a blend that contains specific amounts of: a high density polyethylene having a density of 0.940 g/cm3 or more, or a crystalline ethylene polymer having a crystallinity determined by a DSC method of 10% or more and a density of less than 0.940 g/cm3, an ethylene/&agr;-olefin(/non-conjugated polyene) copolymer rubber comprising ethylene, an &agr;-olefin of 3 to 20 carbon atoms and optionally a non-conjugated polyene, and a polypropylene.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: August 17, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadashi Imai, Akira Uchiyama
  • Patent number: 6774447
    Abstract: The package for mounting a solid state image sensor is a box-type resin package having in its bottom surface an opening for allowing light to pass so that a solid state image sensor may be mounted face down there. In the package, a three-dimensional circuit is formed which has a lead comprising a conductive metal plate making electrical conductance possible. The top surface of the inner lead of the lead is exposed on the inside bottom surface in the vicinity of the opening, and the top surface of the outer lead and the edge of the lead, following a bent section of the lead, are exposed on the side wall top surface of and the top edges of the side wall side surface of the aforesaid box-type resin package, respectively, with all the parts of the lead other than the exposed parts of both ends being embedded in the resin. Because of this, a small, thin package for mounting a solid state image sensor can be manufactured at low cost by using a simple process.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: August 10, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masayuki Kondo, Fumiya Miyata
  • Patent number: 6773667
    Abstract: A hydrogen storage material which is an AB5 type hydrogen storage alloy having a CaCu5 type crystal structure represented by general formula: MmNiaMnbAlcCod wherein Mm is a misch metal, 4.1<a≦4.3, 0.4<b≦0.6, 0.2≦c≦0.4, 0.1≦d≦0.4, and 5.2≦a+b+c+d≦5.45, or general formula: MmNiaMnbAlcCodXe wherein Mm is a misch metal, X is Cu and/or Fe, 4.1<a≦4.3, 0.4<b≦0.6, 0.2≦c≦0.4, 0.1≦d≦0.4, 0<e≦0.1, and 5.2≦a+b+c+d+e≦5.45, characterized in that the lattice length on the c-axis is 406.2 pm or more, and a process of producing the same.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: August 10, 2004
    Assignee: Mitsui Mining & Smelting Company, Ltd.
    Inventors: Kiyotaka Yasuda, Yoshiki Sakaguchi, Shingo Kikugawa
  • Patent number: 6774190
    Abstract: An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer (A-1), which has a density, a melt flow rate (MFR), an amount of a n-decane-soluble portion in the specific ranges and whose melt tension (MT) at 190° C. and MFR satisfy the relation MT>2.2×MFR−0.84, and one (co)polymer selected from the group consisting of (B-1) a low-density polyethylene obtained by high-pressure radical polymerization, (B-2) a crystalline polyolefin and (B-3) an olefin type elastomer. Also disclosed is an ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer composition and the low-density polyethylene (B-1) obtained by high-pressure radical polymerization, said ethylene/&agr;-olefin copolymer (A-2) and (A-3) both having physical properties similar to those of the above ethylene/&agr;-olefin copolymer (A-1) and having intrinsic viscosities different from each other.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: August 10, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Mamoru Takahashi, Akira Todo, Seiichi Ikeyama, Toshiyuki Tsutsui, Shinya Matsunaga, Norio Kaneshige
  • Patent number: 6773640
    Abstract: A process for injection-foaming a thermoplastic resin by using an injection molding machine with a two-stage-compression screw, injecting a physical foaming agent into the cylinder of the machine at a pressure lower than the storage pressure of the physical foaming agent, mixing it with a melted resin and expanding the volume of the cavity of the mold at the time of injection, and an injection molding machine and resin composition suitable therefore.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: August 10, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Eiichi Sugihara, Michio Eriguchi, Masaki Misumi
  • Patent number: 6770735
    Abstract: This invention provides a polymerizable composition for a lens with a high refractive index comprising at least one polythiol compound represented general formula (1): R—(SCH2SH)n  (1) where R is an organic residue except an aromatic group and n is an integer of at least 1, having at least two intramolecular mercapto groups and at least one compound having an intramolecular functional group which can react with a mercapto group; a resin prepared by polymerizing the composition; an optical element and a lens made of the resin; and a process for preparing a thiol compound comprising the steps of reacting a compound represented by general formula (2): HS—R1(—S—R2)m  (2) where m is an integer of at least 1; R1 represents an aromatic, aliphatic, alicyclic or heterocyclic organic residue or aliphatic, alicyclic or heterocyclic organic residue with an aromatic ring or a sulfur atom in its chain; and R2 represents a protective group, with a compound having a functiona
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: August 3, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Mamoru Tanaka, Shigetoshi Kuma, Seiichi Kobayashi, Yoshinobu Kanemura
  • Patent number: 6770734
    Abstract: A polymerizable composition for a lens with a high refractive index comprising at least one polythiol compound represented general formula (1): R—(SH2SH)n  (1) where R is an organic residue except an aromatic group and n is an integer of at least 1, having at least two intramolecular mercapto groups and at least one compound having an intramolecular functional group which can react with a mercapto group; a resin prepared by polymerizing the composition; an optical element and a lens made of the resin; and a process for preparing a thiol compound comprising the steps of reacting a compound represented by general formula (2): HS—R1(—S—R2)m  (2) where m is an integer of at least 1; R1 represents an aromatic, aliphatic, alicyclic or heterocyclic organic residue or aliphatic, alicyclic or heterocyclic organic residue with an aromatic ring or a sulfur atom in its chain; and R2 represents a protective group, with a compound having a functional group which can react wit
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: August 3, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Mamoru Tanaka, Shigetoshi Kuma, Seiichi Kobayashi, Yoshinobu Kanemura
  • Patent number: 6770723
    Abstract: The invention provides olefin polymerization catalyst exhibiting excellent polymerization activities, a process for olefin polymerization using the catalyst, a novel transition metal compound useful for the catalyst, and an &agr;-olefin/conjugated diene copolymer having specific properties. The olefin polymerization catalyst of the invention comprises (A) a transition metal compound of formula (I) or (II), and (B) an organometallic compound, an oranoaluminum oxy-compound or an ionizing ionic compound. The novel transition metal compound of the invention is a compound of formula (I) wherein M is a transition meal atom of Group 3 or 4 of the periodic table; m is an integer of 1 to 3; R1 is a hydrocarbon group, etc.; R2 to R5 are each H, a halogen, a hydrocarbon group, etc.; R6 is a halogen, a hydrocarbon group, etc.; n is a number satisfying a valence of M; and X is a halogen, a hydrocarbon group, etc.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: August 3, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Terunori Fujita, Yasushi Tohi, Makoto Mitani, Shigekazu Matsui, Junji Saito, Masatoshi Nitabaru, Kiyoaki Sugi, Haruyuki Makio, Toshiyuki Tsutsui
  • Patent number: 6770399
    Abstract: The present invention discloses a composite material for anode of lithium secondary battery, comprising: a porous particle nucleus formed by bonding of at least silicon-containing particles and carbon-containing particles, and a carbon-made covering layer formed thereon; and a process for producing such a composite material. The composite material has an average particle diameter of preferably 0.1 to 50 &mgr;m and a specific surface area of preferably 5 m2/g or less. In the composite material, the silicon content in the porous particle nucleus is 10 to 90% by mass.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: August 3, 2004
    Assignee: Mitsui Mining Co., Ltd.
    Inventors: Tatsuo Umeno, Kenji Fukuda, Tadanori Tsunawaki, Youichiro Hara
  • Publication number: 20040145191
    Abstract: An anti-panic mechanism for a vehicle door latch device comprises a movable member provided between to an open link and a lock lever, and an anti-panic spring elastically connecting the lock lever with the movable member. When an unlocking operation by an inside lock button is not completed normally due to a first opening operation of an open handle, the movable member is displaced by a spring force of the anti-panic spring to move the open link to an engageable position after the open lever is returned to an initial position. The movable member and lock lever are coaxially pivoted by a single common shaft.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 29, 2004
    Applicant: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventor: Hirofumi Watanabe
  • Patent number: 6767645
    Abstract: Disclosed herein is a release paper comprising: a paper base laminated with a release layer, this release layer comprising a 4-methyl-1-pentene resin being a copolymer of 4-methyl-1-pentene and an &agr;-olefin other than 4-methyl-1-pentene wherein the &agr;-olefin is contained in a proportion of 6 to 8% by weight. This release paper is excellent in heat resistance and exhibits less curling tendency in repeated use. Further, the release paper exhibits a high bonding strength between resin and paper, and is excellent in durability. The release paper is suitable for use in, for example, production of a synthetic leather.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 27, 2004
    Assignees: Mitsui Chemicals, Inc., Lintec Corporation
    Inventors: Katsumi Noritomi, Kenichi Fukumoto
  • Publication number: 20040143137
    Abstract: The present invention relates to a process for producing 1,5-diaminonaphthalene without formation of 1,8-diaminonaphthalene and not through an unstable nitro imine and nitro enamine as intermediates, the process including the steps of dehydrogenating 5-substituted-1-tetralone to produce a naphthol compound and then aminating the hydroxyl group of the naphthol compound.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 22, 2004
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Yukihiro Kumamoto, Masazumi Takaoka, Hideki Mizuta, Yoriaki Matsuzaki
  • Patent number: 6763575
    Abstract: A process for forming printed circuit boards having integral inductor cores. According to the invention, a thin nickel layer is formed on a copper foil. The copper foil structure is then laminated to a substrate such that the nickel layer is in contact with the substrate. The copper foil is removed, leaving the nickel layer on the substrate. Using photomechanical imaging and etching techniques known in the art, NiFe is plated and patterned directly on the nickel layer, thereby forming integral inductor cores of the substrate. This process of the present invention allows for the elimination of several steps used in known processes, while also reducing etch time and minimizing waste of NiFe.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: July 20, 2004
    Assignee: Oak-Mitsui Inc.
    Inventors: Jonathan Meigs, Wendy Herrick
  • Patent number: 6764669
    Abstract: Disclosed herein is a method for producing potassium fluorotantalate crystals, comprising heating, to 60° C. or higher, a starting solution prepared by adding hydrofluoric acid and hydrochloric acid, and, if necessary, water to a highly pure tantalum solution, adding potassium chloride to this starting solution, and cooling the mixture to 40° C. or lower at a cooling rate of less than 15° C./h to precipitate potassium fluorotantalate crystals, wherein the concentration of the hydrofluoric acid in the starting solution is not more than 20% by weight. By this method, highly pure, large-sized potassium fluorotantalate crystals can successfully be obtained in high yield. Moreover, disadvantages to equipment and operation in the prior art can be overcome to a significant extent with this method.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: July 20, 2004
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Hiromichi Isaka, Kenji Higashi, Yoshitsugu Uchino, Shigeru Kuwabara