Patents Assigned to The Hoffman Group, Ltd.
  • System and method of producing corrugated products with on-line corrugation
    Patent number: 6569287
    Abstract: The present invention relates to a system and method of making paperboard and paperboard corrugation that negates the steps of winding rolls of containerboard on machine reels of separate paper machines, subsequent rewinding and slitting of paperboard and unwinding rolls of containerboard on separate corrugators.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: May 27, 2003
    Assignee: The Hoffman Group, Ltd.
    Inventor: Roger P. Hoffman
  • Method for processing recycled waste paper for integrated packaging
    Patent number: 6241848
    Abstract: A single plant for making corrugated sheets out of recycled paper and a method for making the same. The plant includes a recycling pulper a board machine and a corrugator.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: June 5, 2001
    Assignee: The Hoffman Group, Ltd.
    Inventor: Roger Hoffman