Patents by Inventor Seisuke Mitsunaga

Seisuke Mitsunaga 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: 11492047
    Abstract: A cowl panel comprises an upper face portion where a windshield is joined, a forward protrusion portion extending downwardly from the upper face portion, protruding forwardly, a rearward protrusion portion extending downwardly from a rear lower end of the forward protrusion portion, protruding rearwardly, and a lower face portion extending forwardly from a lower end of the rearward protrusion portion. A reinforcing member which is positioned on a forward side of the forward protrusion portion and the rearward protrusion portion of the cowl panel and joined to the forward protrusion portion and the lower face portion is provided. The reinforcing member comprises a straight portion which substantially straightly extends downwardly from a joint part where the reinforcing member is joined to the forward protrusion portion, and the straight portion is provided with a fragile part.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: November 8, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Mitsuru Wakabayashi, Seisuke Mitsunaga, Hidekazu Shiraishi, Shingo Ono
  • Publication number: 20220297598
    Abstract: A sound generation device for a vehicle, the sound generation device being installed in a vehicle which travels using an electric-powered motor as a power source, includes a sound control apparatus which sets a plurality of frequencies corresponding to a motor rotation speed and generates a synthetic sound signal indicating a synthetic sound including sounds at the plurality of frequencies and a speaker which outputs the synthetic sound based on the synthetic sound signal generated by the sound control apparatus, and the sound control apparatus sets an increase amount of an output of a sound in a low frequency band large compared to an increase amount of an output of a sound in a high frequency band in a frequency range of the synthetic sound in accordance with an increase in a motor torque value.
    Type: Application
    Filed: August 12, 2020
    Publication date: September 22, 2022
    Inventors: Yukifusa Hattori, Seisuke Mitsunaga, Hidekazu Shiraishi, Katsuya Shimizu, Ryuichi Yamada, Chieko Nakagami
  • Publication number: 20210229751
    Abstract: A cowl panel comprises an upper face portion where a windshield is joined, a forward protrusion portion extending downwardly from the upper face portion, protruding forwardly, a rearward protrusion portion extending downwardly from a rear lower end of the forward protrusion portion, protruding rearwardly, and a lower face portion extending forwardly from a lower end of the rearward protrusion portion. A reinforcing member which is positioned on a forward side of the forward protrusion portion and the rearward protrusion portion of the cowl panel and joined to the forward protrusion portion and the lower face portion is provided. The reinforcing member comprises a straight portion which substantially straightly extends downwardly from a joint part where the reinforcing member is joined to the forward protrusion portion, and the straight portion is provided with a fragile part.
    Type: Application
    Filed: October 16, 2020
    Publication date: July 29, 2021
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Mitsuru WAKABAYASHI, Seisuke MITSUNAGA, Hidekazu SHIRAISHI, Shingo ONO
  • Patent number: 5413078
    Abstract: A control system in an automobile has a controller to provide an air-to-fuel ratio leaner than an ideally combustible air-to-fuel ratio when a lean control range of engine operating conditions is detected, and a controller to increase an air flow rate so as to enrich a fuel mixture when an engine operating condition is transitional to the lean control range. The control system conducts sequentially the lean control and the enrich control according to transitional patterns to the lean control range.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: May 9, 1995
    Assignee: Mazda Motor Corporation
    Inventors: Seisuke Mitsunaga, Naoya Matsuo, Akihito Nagao, Yasunori Sasaki