Patents Assigned to Yamahachi Chemical Co., Ltd.
  • Patent number: 5577444
    Abstract: A hand stamp has a holder means which includes an ink storing space and a stamping member connected each other, the stamping member is made of an open-cell foam material partially heat sealed to form an ink impermeable area with a remained area for ink permeation to effect a printing, the ink impermeable area defining intaglio portions is formed by press in the heat sealing process and the ink permeable portions defining relief portions effect the printing, wherein The printing member is made immobile and attached to an opening of the holder, otherwise the printing member is made mobile and encompasses a cylindrical holder circumference, and the holder means is allowed to roll.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: November 26, 1996
    Assignee: Yamahachi Chemical Co., Ltd.
    Inventor: Tetsuyuki Toyama