Patents Assigned to Papakube Corp.
  • Stable blocks formed of shredded paper-like material
    Patent number: 4148952
    Abstract: A stable block is formed of shredded paper or paper-like material (herein after referred to as "paper") and a binder such as ligninsulfonate. The block is formed by shredding paper, mixing the shreds with a binder such as ligninsulfonate resin, and placing the same in a heated matrix of a die; and while in the die, subjecting the mixture to high pressure.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: April 10, 1979
    Assignee: Papakube Corp.
    Inventors: Gerald B. Nelson, William J. Prindle