Patents by Inventor David Nattrass

David Nattrass 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).

  • Stackable, flexible, intermediate bulk bag container having corner baffles
    Patent number: 9394082
    Abstract: A bulk container bag of a flexible fabric has an essentially cubic configuration wherein vertically extending baffles are provided in the interior corners of the bags to permit the bags to better retain their cubic configuration and to improve stability when filled. The baffles have slits defining flaps, alternatively, apertures and flaps, so that the loose granular material captures the flaps after it is filled in the bulk container bag. A method of filling the bag with granular materials is also provided.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: July 19, 2016
    Assignee: Bulk Lift International, Inc.
    Inventor: David Nattrass
  • Stackable, flexible, intermediate bulk bag container having corner baffles
    Patent number: 8678652
    Abstract: A bulk container bag of a flexible fabric has an essentially cubic configuration wherein vertically extending baffles are provided in the interior corners of the bags to permit the bags to better retain their cubic configuration and to improve stability when filled. The baffles have slits defining flaps, alternatively, apertures and flaps, so that the loose granular material captures the flaps after it is filled in the bulk container bag. A method of filling the bag with granular materials is also provided.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: March 25, 2014
    Assignee: Bulk Lift International, Incorporated
    Inventor: David Nattrass