Patents by Inventor Igor Gridnev

Igor Gridnev 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).

  • Patent number: 5472139
    Abstract: An improved container for storing and transporting a hot pizza product that includes a top and bottom with nonzero Gauss curvatured structures over a major portion of the supporting surface so that less material need be used for fabrication without a lowering of structural integrity. The top and bottom members are adapted to nest with other like tops and bottom members to reduce the need storage space near the pizza oven where they are ready for use without preassembly. The floor of the bottom comprises upstanding projections with small top surface area to reduce the heat conduction path and to support the product above the floor to form an air insulating space between the product and the floor. The bottom member includes a sidewall that intersects the floor to form a supporting line when resting on a supporting surface, thermal conduction being limited to such line. The curved, convex shape of the floor then provides a closed air insulating space between the bottom and the resting surface.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: December 5, 1995
    Assignee: Invention Machine Corporation
    Inventors: Michael Valdman, Semyon Litvin, Igor Gridnev, Vladimir M. Gerasimov, Alexey N. Zakharov, Alexander L. Ljubomirsky, Ilona Vasilevskaja