Patents by Inventor Hannu K. Tykkaelae

Hannu K. Tykkaelae has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lined and coated corrugated paperboard package systems for modified atmosphere packaging of fresh fruits and vegetables
    Patent number: 5609293
    Abstract: This invention relates to the design, construction and use of lined or coated corrugated paperboard package systems (e.g. boxes, cartons) for prolonging the storage life of fresh fruits and vegetables under modified atmospheres (MA) in the headspaces of the closed package systems. The plastic-paperboard construction comprises a first layer of polymeric film, a second layer of kraft paper adjacent the first layer, a kraft paper corrugated flute adjacent the second layer and a fourth layer of kraft paper adjacent the flute.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: March 11, 1997
    Assignee: The University of British Columbia
    Inventors: Chiu H. Wu, Juhani I. Oikarinen, William D. Powrie, Hannu K. Tykkaelae