Patents by Inventor Ryoiti Mariyama

Ryoiti Mariyama 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: 4349715
    Abstract: A combined microwave and electric heater oven including a digital control system for controlling operations of a magnetron and a sheath heater, and a cassette tape player system for reproducing audio information and a digital data recorded on a cassette tape. The cassette tape includes a first track on which the audio information related to a cooking explanation is recorded, and a second track on which the digital data related to a cooking program is recorded. The audio information derived from the first track is applied to a speaker system for audibly providing the cooking explanation. The digital data derived from the second track is applied to the digital control system for controlling the operations of the magnetron and the sheath heater in accordance with the cooking program.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: September 14, 1982
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Ryoiti Mariyama