Patents by Inventor Mitsutosho Maeda

Mitsutosho Maeda 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).

  • Rotary type fluid machine
    Patent number: 4678416
    Abstract: A rotary fluid machine of the type including two spiral elements, or a stationary spiral element and a revolving spiral element having identical configurations and disposed 180 degrees apart from each other in mutually nested relationship. The revolving spiral element is adapted to revolve in solar motion relationship with respect to the stationary spiral element with a radius of revolutionary motion .rho..
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: July 7, 1987
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Takahisa Hirano, Shoji Fukami, Mitsutosho Maeda