Patents by Inventor Syunji Aono

Syunji Aono 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).

  • Covering film for casting process by vacuum sealed molding
    Patent number: 4199641
    Abstract: A covering film containing a thermoplastic resin productive of burnt dregs and a thermoplastic resin not productive of burnt dregs moderately disperses in the refractory filler of the mold and forms a relatively thin shell layer near the wall defining the mold cavity in order to successfully avoid generation of mold destruction and sand inclusion and streamline the whole casting process.
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: April 22, 1980
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Syunji Aono, Atsushi Toyoda