Patents by Inventor Guansheng Zhao

Guansheng Zhao 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).

  • Fire retarding and extinguishing composite
    Patent number: 5425885
    Abstract: The present invention concerns a fire retarding and extinguishing composition, specifically, a liquid fire retarding and extinguishing composition for extinguishing fires caused by classes B and A materials and flammable organic solvents. The fire retarding and extinguishing composition of the present invention comprises:(a) an aqueous extract of plant ash and at least one plant selected from a group consisting of plants of Sapindaceae, Compositae, Cruciferae, Leguminosae, root skin of Ulmaceae, Phytolaccaceae and cotton seed;(b) at least one surfactant, in an amount of 30-60 percent by weight of the weight of said aqueous extract of plant ash.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: June 20, 1995
    Assignees: Fenglan Zhao, Huanwen Du
    Inventor: Guansheng Zhao