Patents by Inventor Osamu Matsukawa

Osamu Matsukawa 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: 8058968
    Abstract: A method for manufacturing rectangular plate type chip resistors and a rectangular plate type chip resistor obtained by this method. The method includes the steps of (A) providing a resistive alloy plate strip of predetermined width and thickness, (B) forming an insulating protective film of a predetermined width longitudinally along the middle of upper and lower faces of the alloy plate strip, (C) forming an electrode layer composed of integrated surface, back, and end electrodes, along both sides of the protective film by electroplating, and (D) cutting the alloy plate strip coated with the protective films and the electrode layers in step (C) transversely in predetermined lengths, wherein resistance is controlled to be within a predetermined range by adjusting the thickness of the alloy plate strip in step (A), the width of the protective film formed in step (B), and the cutting length in step (D).
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: November 15, 2011
    Assignee: Kamaya Electric Co., Ltd.
    Inventors: Tatsuki Hirano, Osamu Matsukawa
  • Publication number: 20100176913
    Abstract: There is provided a method for manufacturing rectangular plate type chip resistors which provides easy and convenient control of resistance, and easy and low cost manufacture of rectangular plate type chip resistors having a reliable electrode structure, as well as a rectangular plate type chip resistor obtained by this method and having excellent properties particularly at low resistance.
    Type: Application
    Filed: May 18, 2007
    Publication date: July 15, 2010
    Inventors: Tatsuki Hirano, Osamu Matsukawa