Patents by Inventor Mituru Fujii

Mituru Fujii 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).

  • Patent number: 5236630
    Abstract: This invention provides a conductor paste having a low resistivity (about 10 .mu..OMEGA..cm or below) and capable of retaining a film thickness of 25 to 35 .mu.m after baking by composing the paste from 85 to 96 wt. % of a metal powder having a resistivity of 10 .mu..OMEGA..cm or below and 4 to 15 wt. % of an organic vehicle containing 5 to 13 wt. % of a binder. The invention also provides a process for producing the above-described conductor paste, in which 85 to 96 wt. % of a metal powder having a resistivity of 10 .mu..OMEGA..cm or below and 4 to 15 wt. % of an organic vehicle containing 5 to 13 wt. % of a binder are forcibly passed between the barrel-shaped rolls in a kneader and thereby kneaded to form a paste, wherein the roll interval in the kneader is adjusted so that the smallest distance between the adjoining barrel-shaped rolls becomes 5 .mu.m or less and the shear rate therebetween is set at 1,000 s.sup.-1 or more.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: August 17, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Arima, Takashi Kuroki, Masao Sekihata, Mituru Fujii, Mutsumi Horikoshi
  • Patent number: 5016089
    Abstract: A substrate for hybrid IC which comprises a substrate, a thick film resistor containing glass, formed on the substrate, and a thick film conductor at the terminal of the thick film resistor, where a means for preventing diffusion of the glass from the thick film resistor into the thick film conductor is provided between the thick film resistor and the thick film conductor has a stable resistance as a thick film microresistor and is applied to various uses such as cellular radio communication system.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: May 14, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Mituru Fujii, Tadamichi Asai, Toshio Ogawa, Osamu Ito, Akira Ikegami, Mitsuru Hasegawa, Takao Kobayashi, Teizo Tamura
  • Patent number: 4873022
    Abstract: The present invention provides an electronic circuit component having a ceramic base and more particularly to a conductive paste for circuit film and an electronic circuit component having a copper film circuit of 10 .mu.m of less in film thickness formed from said conductive paste and a method for making the electronic circuit component.The characteristic of the present invention resides in a conductive paste comprising 100 parts by weight of copper powder of 1 .mu.m or less in average particle size, 0.01-4 parts by weight of at least one of S, Te and Se and 1-10 parts by weight of a frit glass as a binder.Further, there is provided an electronic circuit component having a copper film circuit containing 0.005-2 parts by weight of at least one of S, Te and Se and an effective amount of a glass as a binder for 100 parts by weight of copper which is produced by forming a circuit pattern of said conductive paste on an insulating base by flexo-printing method or the like and then firing the pattern.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: October 10, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Ogawa, Mituru Fujii, Tadamichi Asai, Akira Ikegami, Hiroshi Ohtsu, Kazuhiko Ato
  • Patent number: 4674654
    Abstract: A liquid dispenser having an air introduction tube with a sound generating mechanism for mounting to an opening of a container holding a liquid such as beer. When liquid is poured through the dispenser a pulsating air flow is generated in the air introduction tube which causes the sound generating mechanism to produce a chirping sound.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: June 23, 1987
    Inventors: Mituru Fujii, Tomoyuki Dobashi, Hisashi Sasaki, Masamichi Imanishi, Toshihiro Ueda
  • Patent number: D246296
    Type: Grant
    Filed: April 27, 1971
    Date of Patent: November 8, 1977
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Mituru Fujii, Izumi Narusawa