Patents by Inventor Kazunaga Misonoo

Kazunaga Misonoo 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: 3972217
    Abstract: A method and apparatus for deep drawing a cup-shaped article in which a blank is placed on a punch and the punch is passed through a series of deep drawing dies, so that the force required to strip the drawn cup-shaped article from the punch is substantially less than in a conventional method. After the deep drawing is completed, the cup-shaped article is slightly drawn to the final desired dimensions by a drawing step in which the wall thickness of the article is reduced no more than 10%. This is carried out by a slight drawing die spaced from the last of the series of deep drawing dies, preferably a distance at least half the height dimension of the finished deep drawn cup-shaped article.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: August 3, 1976
    Assignee: Yoshizaki Kozo
    Inventor: Kazunaga Misonoo