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Yoshiki Fujita

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Patents Grantslast 30 patents

  • Information Patent Grant

    Manufacturing method of steel ball for rolling bearing
    • Patent number 6,745,472
    • Issue date Jun 8, 2004
    • Koyo Seiko Co., Ltd.
    • Yoshiki Fujita
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Anti-friction bearing
    • Patent number 4,293,171
    • Issue date Oct 6, 1981
    • Koyo Seiko Company Limited
    • Ken-Ichi Kakumoto
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Seal assembly for bearing
    • Patent number 4,191,432
    • Issue date Mar 4, 1980
    • Koyo Seiko Company Limited
    • Toshio Miki
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents