TREA

Yasuyuki Ohtsuka

Follow

Person

  • Kanagawa, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Punch holder apparatus
    • Patent number 6,463,839
    • Issue date Oct 15, 2002
    • Amada Company, Limited
    • Yasuyuki Ohtsuka
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Forming tools
    • Patent number 6,134,938
    • Issue date Oct 24, 2000
    • Amada Metrecs Company, Limited
    • Yasuyuki Ohtsuka
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    PUNCH HOLDER APPARATUS
    • Publication number 20020007714
    • Publication date Jan 24, 2002
    • YASUYUKI OHTSUKA
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...