Patents Assigned to Osamu Yamada
  • Patent number: 4965044
    Abstract: The present invention relates to a method of sintering ceramics and ceramics obtained by said method. According to the present invention, the synthesis and sintering of ceramics can be simultaneously carried out by utilizing the reaction heat generated when at least one metallic element selected from metallic elements of IIb, IVb, Vb and VIb groups of the Periodic Table is combined with at least one nonmetallic element such as B, C N and Si without heat or by preliminarily heating the ceramics at temperatures remarkably lower than the usual sintering temperature ceramics thus-produced are superior in abrasion resistance and corrosion resistance.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: October 23, 1990
    Assignees: I. Sumitomo Electric Industries, Ltd., Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi
    Inventors: Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi, Osamu Komura, Eiji Kamijo, Masaaki Honda, Akira Yamakawa
  • Patent number: 4906295
    Abstract: The present invention relates to a method of sintering ceramics and ceramics obtained by said method. According to the present invention, the synthesis and sintering of ceramics can be simultaneously carried out by utilizing the reaction heat generated when at least one metallic element selected from metallic elements of IIIb, IVa, Vb and VIb groups of the Periodic Table is combined with at least one nonmetallic element such as B, C, N and Si without heat or by preliminarily heating the ceramics at temperatures remarkably lower than the usual sintering temperature ceramics, thus-produced are superior in abrasion resistance and corrosion resistance.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: March 6, 1990
    Assignees: Sumitomo Electric Industries, Ltd., Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi
    Inventors: Yoshinari Miyamoto, Osamu Yamada, Mitsue Koizumi, Osamu Komura, Eiji Kamijo, Masaaki Honda, Akira Yamakawa