Patents by Inventor Yasuhiko Nonaka

Yasuhiko Nonaka 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 manufacturing targets of pickup tubes
    Patent number: 3966512
    Abstract: In a method of manufacturing the target of a pickup tube of the class wherein an N-type light transmitting conductive film is formed on a substrate, an N-type photoconductive film consisting of a group II-VI compound is formed on the N-type light transmitting conductive film by means of a vacuum deposition device comprising a boat for containing the compound and a hollow shielding member, and then a P-type amorphous photoconductive film consisting essentially of metal selenium is applied onto the N-type photoconductive film. The temperature of the substrate is maintained in a range of from 50.degree.C to 250.degree.C when the N-type photoconductive film is formed on the N-type light transmitting conductive film. The distance between the boat and the substrate is maintained in a range of from 8 to 13 cm.
    Type: Grant
    Filed: September 5, 1974
    Date of Patent: June 29, 1976
    Assignee: Hitachi, Ltd.
    Inventor: Yasuhiko Nonaka