Patents by Inventor Michael Greengrass

Michael Greengrass 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).

  • Controlled ripening of produce and fruits
    Patent number: 4886372
    Abstract: A flexible, semi-rigid or rigid plastics material container, bag or encasement for produce, the container, bag or encasement having a selected size and number of openings therein, with the modified atmosphere within the container, bag or encasement controlled to delay the ripening of the produce located within the container, bag or encasement.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: December 12, 1989
    Inventors: Michael Greengrass, Anthony L. Allen
  • Reinforced flexible panels comprising plastic sheeting on opposed sides of a mesh layer and a metal foil layer in association with a plastic sheet layer
    Patent number: 4170675
    Abstract: A fire-retardant sheet comprising superposed layers including a plastic material with a metal foil on one side and a further plastic sheet or layer laminated thereto with the interposition of a wire mesh.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: October 9, 1979
    Assignee: Flexipane Limited
    Inventor: Michael Greengrass
  • Reinforced flexible panels
    Patent number: 4096304
    Abstract: A fire-retardant sheet comprising, as four superposed layers, a fire-retardant paper sheet, coated on one surface with a plastic material and on the other surface with a metal foil and having a scrim of fibreglass between the foil and paper, said sheet additionally comprising a further plastic sheet or layer laminated thereto with the interposition of a mesh.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: June 20, 1978
    Assignee: Flexipane Limited
    Inventor: Michael Greengrass