Patents by Inventor Yuichi Nagasaki

Yuichi Nagasaki 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 ITO sintered body
    Patent number: 5980815
    Abstract: An indium oxide-tin oxide (ITO) sintered body is prepared by mixing a tin oxide powder with an indium oxide powder, molding the resulting mixed powder to obtain a green body, and sintering the resulting green body. At least the tin oxide powder has beforehand been pulverized by colliding tin oxide particles with each other or against a collision substance in gas streams. At least 90 wt % of the pulverized tin oxide powder is preferably particles having a particle size of 0.2-10 .mu.m. A jet mill can be used for the pulverization. The ITO sintered body has a density as high as 7.08 g/cm.sup.3 or more and, during sputtering, is free from nodule formation and is inhibited from generating particles.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: November 9, 1999
    Assignee: Tosoh Corporation
    Inventors: Osamu Matsunaga, Yuichi Nagasaki, Tsutomu Takahata