Patents by Inventor Osamu Makino

Osamu Makino 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).

  • Process for making a voltage dependent resistor
    Patent number: 3962144
    Abstract: A process for making a bulk-type voltage-dependent resistor and more particularly to a varistor comprising a zinc oxide sintered body using heat-treated zinc oxide powder. By heat-treating zinc oxide powder before the sintering step, a bulk-type voltage-dependent resistor is obtainable which is characterized by a high n-value in a region of current higher than 10A/cm.sup.2 and high power dissipation as well as a lower C-value.
    Type: Grant
    Filed: October 16, 1974
    Date of Patent: June 8, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mikio Matsuura, Michio Matsuoka, Osamu Makino
  • Voltage-dependent resistor
    Patent number: 3953373
    Abstract: A voltage-dependent resistor comprising a sintered body comprising ZnO as a major part and Bi.sub.2 O.sub.3 and GeO.sub.2 as additives with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value and a high n-value in I=(V/C).sup.n along with high power dissipation for surge energy and high stability to a high D.C. load. Further, other additives such as NiO, Co.sub.2 O.sub.3, MnO, TiO.sub.2 and Cr.sub.2 O.sub.3 can advantageously be added to the sintered body.
    Type: Grant
    Filed: July 18, 1974
    Date of Patent: April 27, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mikio Matsuura, Osamu Makino, Nobuji Nishi, Michio Matsuoka