Patents by Inventor Tetsuyuki Toyama

Tetsuyuki Toyama 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).

  • Multiple-seal-faced stamp of liquid-exuding type
    Patent number: 6840172
    Abstract: A stamp of liquid-exuding type has a multiple-seal-faced assembly adapted for stamping with selected one of these multiple faces, preferably for stamping with multiple colors.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: January 11, 2005
    Assignee: Yamahachi Kemikaru Kabushiki Kaisha
    Inventor: Tetsuyuki Toyama
  • Roller stamp of ink-exuding type and method for making the same
    Patent number: 6659001
    Abstract: A stamp of liquid-exuding type has a multiple-seal-faced assembly adapted for stamping with selected one of these multiple faces, preferably for stamping with multiple colors.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: December 9, 2003
    Assignee: Yamahachi Kemikaru Kabushiki Kaisha
    Inventor: Tetsuyuki Toyama
  • Roller stamp of ink-exuding type and method for making the same
    Publication number: 20030070568
    Abstract: A stamp of liquid-exuding type has a multiple-seal-faced assembly adapted for stamping with selected one of these multiple faces, preferably for stamping with multiple colors.
    Type: Application
    Filed: July 1, 2002
    Publication date: April 17, 2003
    Inventor: Tetsuyuki Toyama
  • Multiple-seal-faced stamp of liquid-exuding type
    Publication number: 20020144614
    Abstract: A stamp of liquid-exuding type has a multiple-seal-faced assembly adapted for stamping with selected one of these multiple faces, preferably for stamping with multiple colors.
    Type: Application
    Filed: March 19, 2002
    Publication date: October 10, 2002
    Inventor: Tetsuyuki Toyama
  • Hand stamp
    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