Patents by Inventor Toshio Narita

Toshio Narita 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: 5101663
    Abstract: The strength of a join between a ceramic and an associated non-ceramic is determined using an ultrasonic microscope. A converging ultrasonic beam is radiated against a point on a surface of the ceramic, said point being a predetermined distance away from the join between the ceramic and the associated non-ceramic. Data on the intensities of interference waves at respective predetermined variations of the relative distance between a probe of the ultrasonic microscope and the ceramic are collected. The residual stress at the point is calculated on the basis of the cycle of echo intensities of the interference waves for the respective predetermined variations of the relative distance. The strength of the join is then determined on the basis the residual stress.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: April 7, 1992
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Toshio Narita, Isao Ishikawa, Tatuo Ishikawa
  • Patent number: 5091736
    Abstract: A thermal print head including a glass layer disposed at the edge of a heat resistant substrate, a heat generating element on the glass layer and an electrode for driving the heat generating element disposed both under the glass layer and on the heat generating element is provided. The glass layer is formed of a lower layer of crystallized glass on the electrode and an upper non-crystallized glass portion under the heat generating element. The electrode under the glass layer is formed by print burning a thick conductive film on the substrate from a metal paste having a higher burning temperature than the burning temperature of the glass layers.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: February 25, 1992
    Assignee: Seiko Epson Corporation
    Inventor: Toshio Narita
  • Patent number: 4973986
    Abstract: A thermal print head including a glass layer disposed at the edge of a heat resistant substrate, a heat generating element on the glass layer and an electrode for driving the heat generating element disposed both under the glass layer and on the heat generating element is provided. The glass layer is formed of a lower layer of crystallized glass on the electrode and an upper noncrystallized glass portion under the heat generating element. The electrode under the glass layer is formed by print burning a thick conductive film on the substrate from a metal paste having a higher burning temperature than the burning temperature of the glass layers.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: November 27, 1990
    Assignee: Seiko Epson Corporation
    Inventor: Toshio Narita