Patents by Inventor Toshihiko Nakau

Toshihiko Nakau 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).

  • Measuring element for a mass air flow sensor and mass air flow sensor using the measuring element
    Patent number: 5708205
    Abstract: A measuring element for a mass air flow sensor formed on a substrate for measuring a flow rate of an objective fluid comprises a pair of heated resistors of thin films juxtaposed in the flowing direction of the objective fluid, formed at a thin film heated resistor forming part on the substrate, a pair of non-heated ambient temperature sensing resistors of thin films, formed at a thin film ambient temperature sensing resistor forming part on the substrate, and a plurality of electrode terminals of thin films formed at a supporting part at which the substrate is supported, being a part excluding the heated resistor thin film forming part and the thin film ambient temperature sensing resistor forming part, for taking out electrical signals from the heated resisters and the non-heated ambient temperature sensing resistors, wherein the thin film heated resistor forming part and the thin film ambient temperature sensing resistor forming part are shifted each other and arranged before and after in the flowing direc
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: January 13, 1998
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Masamichi Yamada, Kaoru Uchiyama, Izumi Watanabe, Tadashi Isono, Toshihiko Nakau