Patents by Inventor Masao Onji

Masao Onji 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).

  • Method of improving the quality of an edge surface of a cutting device
    Patent number: 5053245
    Abstract: A method of improving the quality of an edge surface of a cutting device, the method comprising a first step of irradiating assisting ions obtained from a first substance, which is in the state of gas in the room temperature, and a second substance, which is vapor-deposited from a hard material, onto a surface of a base body to form a first layer comprising of the hard material influenced by the assisting ions; and a second step of irradiating the second substance onto the first layer in an atmosphere of the first substance to form a second layer.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: October 1, 1991
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiichi Kiyama, Hitoshi Hirano, Masao Onji