Patents by Inventor Kunio Uchida

Kunio Uchida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030096104
    Abstract: A complex molded body of carbon nanotubes includes a matrix and carbon nanotubes arranged in a given direction in the matrix. The matrix is at least one organic polymer selected from the group consisting of thermoplastic resin, thermosetting resin, rubber, and thermoplastic elastomer. The complex molded body is produced by a method comprising the step of: providing a composition that includes a matrix and carbon nanotubes; applying a magnetic field to the composition to arrange the carbon nanotubes in a given direction; and hardening the composition to produce a complex molded body. The complex molded body has excellent anisotropy in terms of electrical property, thermal property, and mechanical property.
    Type: Application
    Filed: March 14, 2002
    Publication date: May 22, 2003
    Applicant: Polymatech Co., Ltd.
    Inventors: Masayuki Tobita, Toru Kimura, Motoo Yumura, Satoshi Ohshima, Hiroki Ago, Kunio Uchida, Yozo Kakudate, Hiroyuki Yokoi
  • Patent number: 5695734
    Abstract: A process for the isolation of carbon nanotubes from a mixture containing carbon nanotubes and graphite is disclosed, which includes the steps of:(a) reacting the mixture with a metal compound to intercalate the metal compound into the graphite;(b) reducing the reaction mixture obtained in step (a) to convert the intercalated metal compound to elemental metal;(c) heating the reduction mixture obtained in step (b) at a temperature of 450-600.degree. C. in an oxygen-containing atmosphere to selectively oxidize the graphite and the elemental metal; and(d) contacting the heated mixture obtained in step (c) with a liquid to dissolve the oxidized metal in the liquid and to separate the carbon nanotubes as a solid phase from the oxidized metal.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: December 9, 1997
    Assignee: Director-General of Agency of Industrial Science & Technology
    Inventors: Fumikazu Ikazaki, Kunio Uchida, Motoo Yumura, Satoshi Ohshima, Yasunori Kuriki, Hiroshi Hayakawa
  • Patent number: 5587141
    Abstract: Soot containing fullerenes is produced by impressing a DC voltage between a carbonaceous anode and a cathode in an airtight chamber maintained in an inert gas atmosphere to cause arc discharge to occur. After termination of the impression of the DC voltage, an inert gas is blown into the chamber to fluidize the soot. The fluidized soot is discharged from the chamber and is brought into contact with a solvent to recover the fullerenes.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: December 24, 1996
    Assignee: Director-General of Industrial Science and Technology
    Inventors: Satoshi Ohshima, Motoo Yumura, Yasunori Kuriki, Kunio Uchida, Fumikazu Ikazaki
  • Patent number: 5560898
    Abstract: Carbon nanotubes are isolated from a mixture containing the carbon nanotubes and graphite particles by a process including the steps of:finely pulverizing the mixture;dispersing the pulverized product in a liquid medium;centrifuging the resulting dispersion to obtain a supernatant containing carbon nanotubes and graphite particles having a particle size of 0.3 .mu.m or less;separating the supernatant into a solid phase and a liquid phase; andcalcining the solid phase in an oxygen-containing atmosphere at a temperature sufficient to burn the graphite particles and to leave the nanotubes.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: October 1, 1996
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Kunio Uchida, Motoo Yumura, Satoshi Ohshima, Yasunori Kuriki, Kiyoshi Yase, Fumikazu Ikazaki
  • Patent number: 5482601
    Abstract: Carbon nanotubes are produced by successively repositioning an axially extending rod-like carbonaceous anode relative to a cathode surface such that a tip end surface of the anode successively faces on different portions of the cathode surface while impressing a direct current voltage therebetween, so that an arc discharge occur with the simultaneous formation of carbonaceous deposits containing carbon nanotubes on each of the portions of the cathode surface. The carbonaceous deposits are scraped and collected. A device for carrying out the above method includes a driving member for displacing the cathode surface relative to the anode.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: January 9, 1996
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Satoshi Ohshima, Motoo Yumura, Yasunori Kuriki, Kunio Uchida, Fumikazu Ikazaki
  • Patent number: 4981824
    Abstract: A novel ceramic material affording a ceramic molded bodies having a high toughness and a high tensile strength is disclosed which comprises a smectite clay mineral having at least a portion of ion-exchangeable cations thereof ion-exchanged with bismuth ions. The ceramic material is prepared by treating a smectite clay mineral with an aqueous solution containing bismuth ions to ion-exchange at least a portion of ion-exchangeable cations thereof with bismuth ions.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: January 1, 1991
    Assignee: Director - General of Agency of Industrial Science and Technology
    Inventors: Michiko Yonemura, Tadao Sekine, Yoshimichi Kiyozumi, Kunio Suzuki, Kunio Uchida, Fumikazu Ikazaki, Shigemitsu Shin
  • Patent number: 3980465
    Abstract: Iron-ore oxidized pellets are produced from magnetite concentrate by the addition to the magnetite concentrate of at least one calcium compound selected from the group consisting of slaked lime, quicklime and limestone, to a basicity of 1 to 5, granulating the mixture thus prepared, drying the same, preheating the same at a temperature of from 1000.degree. to 1150.degree.C for 3 to 10 minutes, and thereafter firing the same.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: September 14, 1976
    Assignee: Kobe Steel Ltd.
    Inventors: Reijiro Nishida, Kunio Takeda, Dentaro Kaneko, Kunio Uchida