Patents by Inventor Hiroyuki Sumihara

Hiroyuki Sumihara 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: 5033672
    Abstract: An automobile air conditioning device includes a ventilation system with a ventilation fan for discharging air contained in a passenger chamber from the vehicle. A dew condensation detector is adapted to detect a predetermined relative humidity for a dew point at which dew condensation on a rear window glass of the vehicle is presumed to occur. A controller actuates the ventilation system when the dew condensation detector detects the dew point while the vehicle is running.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: July 23, 1991
    Assignee: Mazda Motor Corporation
    Inventors: Hiroaki Sakamoto, Hiroyuki Sumihara, Shigetoshi Doi, Shinshi Kajimoto