Patents by Inventor Masami Isii

Masami Isii 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).

  • Process for making a minute hole
    Patent number: 4045311
    Abstract: An inexpensive process for making a minute circular hole having a smooth peripheral edge in a thin wall of a metal article. A depression is formed on one surface of the wall so as to simultaneously form a projection on the other surface thereof. The apex of the projection is positioned in a spaced relationship to a cathode in an electrolyte. An electric current is then introduced between the projection, which serves as an anode, and the cathode, which acts to selectively and anodically dissolve the apex of the projection so as to form a minute hole in the wall.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: August 30, 1977
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Aisin Seiki Kabushiki Kaisha
    Inventors: Masao Matsui, Atsunobu Murata, Masami Isii, Hiromu Komai