Patents Assigned to PICA-MARKER VERMÖGENS GMBH & CO. KG
  • Mechanical pencil
    Patent number: 11090969
    Abstract: A mechanical pencil includes a writing lead, a chuck that chucks the writing lead and feeds the writing lead forward, and a shaft tube for housing the writing lead and the chuck. When a click operation for feeding the chuck forward is performed, a jet stream flowing forward is generated inside the shaft tube.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: August 17, 2021
    Assignees: KOTOBUKI & CO., LTD., PICA-MARKER VERMÖGENS GMBH & CO. KG
    Inventors: Hidehei Kageyama, Tadao Odaka, Toshikazu Sasaki