Patents by Inventor Hiroyuki Naka

Hiroyuki Naka 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 heating a patterned substrate
    Patent number: 4927068
    Abstract: A method for heating a patterned substrate having electronic components, using a heat control mask having plural apertures is disclosed. Heat transfer rates associated with the apertures are determined by thermodynamic analysis based on the discrete two-dimensional heat conduction equation treating heat from the heater as an advection.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: May 22, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Naka, Tomohide Hirono, Naoki Suzuki, Takashi Ichiyanagi
  • Rotary head assembly with pump-out type spiral grooves for more stable tape running
    Patent number: 4641214
    Abstract: In a rotary head assembly in which a rotary member (14) provided with a magnetic head (23) in the gap between the upper and the lower fixed cylinders (17 and 18) having nearly equal diameters and arranged coaxially with each other is turned, use is made of a structure such that the upper and the lower fixed cylinders (17 and 18) are secured in place and supported by a fixed shaft arranged coaxially therewith, whereby more stable magnetic tape running has been realized, while achieving ease of assembling with high accuracy and reduction of power consumption.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: February 3, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyokazu Imanishi, Hiroyuki Naka, Yasuo Sakurai, Takashi Ichiyanagi, Masaru Kishimoto