Patents Assigned to Kabushiki Kaisha Seisan Nihon Sha Ltd.
  • Integral reclosable bag
    Patent number: RE28969
    Abstract: .Iadd.A reclosable plastic bag having interlocking rib and groove elements integral with the plastic of the bag formed with an arrowhead shaped rib. The rib and groove are structurally interrelated in different forms so that the bag opens easily from the outside and resists opening from the inside..Iaddend.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: September 21, 1976
    Assignee: Kabushiki Kaisha Seisan Nihon Sha Ltd.
    Inventor: Kakuji Naito