Patents by Inventor Yuziro Kaneko

Yuziro Kaneko 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).

  • Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
    Patent number: 4788095
    Abstract: This invention provides a metal oxide magnetic substance represented by the following general formula:MeO.n[Ma.sub.x Mb.sub.y Co.sub.z Fe.sub.2-(x+m/3y+2/3z) O.sub.3 ][wherein, Me, Ma, Mb, x, y, z, m and n are each as mentioned below.Me: at least one divalent metal selected from the group consisting of Ba, Sr and Pb,Ma: at least one trivalent metal selected from the group consisting of Ga, Al, Cr and Rh,Mb: at least one divalent to tetravalent metal selected from the group consisting of Zn (divalent); Ni, In, Sc, Cr, Sb, Bi, Y and Sm (trivalent), and Mo, Ti, Sn, Ta, V, Mn, Ir, Hf, Pd, Nb, Re, Pt, Os, Zr, Tc, Rh, Ge, Ru, W, Te, Pr and Ce (tetravalent) wherein, the metal represented by Mb is not the same as that represented by Me or Ma)x: 0<x.ltoreq.0.5y: 0<y.ltoreq.0.5z: 0<z.ltoreq.0.5 (wherein, 0<x+y+z.ltoreq.1)m: an ionic valency of Mbn: 5.ltoreq.n.ltoreq.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: November 29, 1988
    Assignee: Ricoh Company, Ltd.
    Inventors: Hazime Machida, Hitoshi Nakamura, Fumiya Omi, Atsuyuki Watada, Yuziro Kaneko