Patents by Inventor George C. Zgruis

George C. Zgruis 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).

  • Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators and method for producing it
    Patent number: 7682738
    Abstract: A method for producing a lead acid battery that operates on the oxygen cycle is disclosed. The method includes the steps of: assembling a cell comprising a positive plate, a negative plate, and a sheet of separator material which is an absorbent, porous filtration medium, so that there is free space between the plates and surfaces of the separator, inserting the cell into a case, introducing into the case a mixture of sulfuric acid and silica including silica from a never dried precipitated silica slurry, causing the sulfuric acid in the mixture in the free space to gel, and sealing the case. The sulfuric acid in the mixture in the free space can be caused to gel by an increase in the silica content thereof, by an increase in the specific gravity thereof, or by both an increase in the silica content thereof, and an increase in the specific gravity thereof.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: March 23, 2010
    Assignee: KVG Technologies, Inc.
    Inventors: Antonio L. Ferreira, George C. Zgruis, Norman Lifshutz