Patents by Inventor Tatsuo Nakazawa

Tatsuo Nakazawa 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 producing copper-indium-sulfur-selenium thin film and process for producing copper-indium-sulfur-selenium chalcopyrite crystal
    Patent number: 5695627
    Abstract: A process for producing a copper-indium-sulfur-selenium thin film which comprises subjecting an electro-conductive substrate to an electrodeposition treatment in the presence of copper sulfate, indium sulfate, selenium dioxide, and thiourea. A process for producing a chalcopyrite crystal which comprises subjecting an electro-conductive substrate to an electrodeposition treatment in the presence of copper sulfate, indium sulfate, selenium dioxide, and thiourea, and then conducting a heat treatment.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: December 9, 1997
    Assignee: Yazaki Corporation
    Inventors: Tatsuo Nakazawa, Tomio Hirano, Takeshi Kamiya