Patents by Inventor Kimiteru Tagawa

Kimiteru Tagawa 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).

  • Method for forming a continuous material
    Patent number: 6402868
    Abstract: A method for forming a continuous material by connecting sheet materials which are used in various fields including the processing of metal foils, the processing of metal-plastic composite film material, and the processing of thermoplastic resin films such as polyimides, and an apparatus used for carrying out this method comprising a hot press, a material locking device and an accumulator. A continuous material can be formed by interposing a resin bonding layer between the trailing edge of a sheet material and the leading edge of another sheet material, and subjecting this part to thermocompression bonding.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: June 11, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kimiteru Tagawa, Shigemoto Kijima, Yoshitake Kobayashi, Eiji Ohtsubo
  • Insulating adhesive tape, and lead frame and semiconductor device employing the tape
    Patent number: 5406124
    Abstract: An insulating adhesive tape which comprises a base supporting film and an adhesive layer formed on at least one surface thereof, said adhesive layer being formed of a thermoplastic polymer comprising a thermoplastic polyimide, wherein said thermoplastic polymer has a glass transition temperature ranging from 180.degree. C. to 280.degree. C. and an elastic modulus ranging from 10.sup.10 dyne/cm.sup.2 to 10.sup.11 dyne/cm.sup.2 at 25.degree. C., said modulus including a value ranging from 10.sup.2 dyne/cm.sup.2 to 10.sup.9 dyne/cm.sup.2 at a temperature between 250.degree. C. and 300.degree. C.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: April 11, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Moritsugu Morita, Kimiteru Tagawa, Kenji Abe, Naoshi Mineta, Takayuki Kubo, Shigeo Kiba, Etsuo Ohkawado, Kenji Tanabe
  • Ferromagnetic metal particles and preparation process thereof
    Patent number: 5188898
    Abstract: Ferromagnetic metal particles the surface layer of which comprises laminatedly covered films of a ferrite compound having a spinel structure of at least one metal selected from cobalt, zinc, manganese, aluminum, chromium, nickel and copper and iron and a preparation process thereof.The particles can be used as a high density magnetic recording medium.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: February 23, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kimiteru Tagawa, Seiichi Takahashi, Noritoshi Utsuno, Hideki Umehara, Fujio Hayashi, Shigeo Kiba, Satoru Suda
  • Method and apparatus for automatic analysis of fluid composition involving a time-dependent variation thereof
    Patent number: 5186895
    Abstract: An automatic analytical apparatus in which a series of operations ranging from the sampling into a treating receptacle, pretreatment, analysis and discharge of a fluid sample to the preparation for the next analysis are repeated automatically in order, wherein the time-dependent variation of the composition is traced successively. This permits the presence of the composition variation or the course of the composition variation to be confirmed or the composition variation to be controlled, automatically.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: February 16, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Mitsuo Onofusa, Nobuyoshi Hashimoto, Kimiteru Tagawa, Michiro Hagiwara
  • Production process of ferromagnetic iron powder
    Patent number: 4469506
    Abstract: Disclosed herein is a process for producing ferromagnetic iron powder, which process comprises adding and mixing boron oxide or a borate with .alpha.-FeOOH or .alpha.-Fe.sub.2 O.sub.3 without dissolving the former, heating the thus-obtained mixture to 350.degree. C. or higher in a non-reducing atmosphere and then reducing the thus-heated mixture.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: September 4, 1984
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Haruo Sekiguchi, Kimiteru Tagawa, Kazushi Ohshima, Nobuhiro Fukuda