Patents by Inventor Hiroshi Tomoto

Hiroshi Tomoto 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).

  • Electronic device such as a thermistor and the like with improved corrosion resistance
    Patent number: 6344790
    Abstract: Corrosion resistant material is used for lead wires of the thermistor, and an exposed portion of electrodes of the thermistor and a portion surrounding a weld portion of the lead wires are coated with corrosion resistant material. Since the lead wires themselves are made of corrosion resistant material, no corrosion occurs in the welding portion and a cut working portion. Further, the lead wires and the exposed portion of the electrodes are coated with corrosion resistant material. Thereby an electronic device having extremely high corrosion resistivity and hence high durability and reliability is produced, with the result that the electronic device can be used for a long period without corrosion under the heavily corrosive environment, such as sulfur dioxide gas atmosphere.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: February 5, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Naoyuki Ochi, Masahiro Hirama, Hiroshi Tomoto, Atsushi Miyazaki, Takayuki Saito, Kaoru Uchiyama
  • Antenna
    Patent number: D475700
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: June 10, 2003
    Assignee: Mitsubishi Materials Corporation
    Inventors: Shinji Sakai, Yoshiomi Go, Akikazu Toyoda, Hiroshi Tomoto, Kai Fujii, Eiichirou Hirose, Hidenao Matsushima