Patents Assigned to Colleen Pencil Co., Ltd.
  • Felt pen having two end caps
    Patent number: 4509875
    Abstract: A felt pen comprises a bar shaped main body defined with linear line and taper line, and transparent caps for writing tips at the both ends of the main body. Each of the caps stands with the main body thereon and may be mounted on the other cap.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: April 9, 1985
    Assignee: Colleen Pencil Co., Ltd.
    Inventor: Koichi Shintani
  • Pen
    Patent number: D286163
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: October 14, 1986
    Assignee: Colleen Pencil Co., Ltd.
    Inventor: Koichi Shintani
  • Combined twin-nibbed marker and ball-point pen
    Patent number: D306315
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: February 27, 1990
    Assignee: Colleen Pencil Co. Ltd.
    Inventor: Koichi Shintani