Patents by Inventor Yoshinao Ohsawa

Yoshinao Ohsawa 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).

  • Multi-element metal chalocogenide
    Patent number: 5051204
    Abstract: A novel, multi-element metal chalcogenide is disclosed which has the following general formula (I):X.sub.(1-a)x X'.sub.ax Y.sub.y Z.sub.z (I)wherein X stands for at least one element selected from Bi, Sb and As, X.sup.1 stands for at least one element selected from Pb, Sn and Ge, Y stands for at least one element selected from Ti, V, Nb and Ta, Z stands for at least one element selected from S, Se and Te, a is a number of 0-1, x is a number of 0.8-1.2, y is a number of 0.8-1.2 or 1.6-2.4 and z is a number of 2.4-3.6 when y is 0.8-1.2 or a numeral of 4.0-6.0 when y is 1.6-2.4.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: September 24, 1991
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Yoshinao Ohsawa, Yoshito Gotoh