Patents by Inventor Yoshinori Iwano

Yoshinori Iwano 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: 12009855
    Abstract: A monitoring system according to the present disclosure includes: an optical fiber (10) configured to sense a peripheral environmental state, a monitor's terminal (40), a receiving unit (20) configured to receive an optical signal containing information indicating the environmental state from the optical fiber (10), a detecting unit (32) configured to detect at least one of an accident and an incident, based on the information indicating the environmental state, being included in the optical signal, and a broadcasting unit (33) configured to broadcast that the accident or the incident has occurred to the monitor's terminal (40) when the detecting unit (32) determines that the accident or the incident has occurred.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: June 11, 2024
    Assignee: NEC CORPORATION
    Inventors: Yoshinori Kitahara, Yoshiaki Aono, Yuusuke Sakurai, Tadayuki Iwano
  • Patent number: 6967357
    Abstract: A voltage-driven power semiconductor device includes a voltage-driven IEGT chip, a collector electrode plate, an emitter electrode plate, and an inductance material. The collector electrode plate is connected to the collector of the IEGT chip, and press-contacts the IEGT chip from its collector side. The emitter electrode plate press-contacts the IEGT chip from its emitter side. The inductance material has an inductance component and connects the emitter of the IEGT chip and the emitter electrode plate. In the voltage-driven power semiconductor device having this arrangement, an induced electromotive force is generated in the inductance material arranged between the emitter of the IEGT chip and the emitter electrode plate. This induced electromotive force can suppress a steep current change (di/dt) upon an OFF operation, and can further suppress a steep voltage change (dv/dt) caused by the current change (di/dt).
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 22, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hironobu Kon, Yoshinori Iwano, Mitsuhiko Kitagawa, Shigeru Hasegawa, Michiaki Hiyoshi