Patents by Inventor Subba Narasiah

Subba Narasiah 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).

  • Device and a method for filtering a liquid with wood ash to remove impurities therefrom
    Patent number: 5108614
    Abstract: The liquid from which impurities are to be removed is introduced by being distributed throughout the entire top or bottom surface of the filtering medium. The filtering medium includes at least a bed of wood ash through which the liquid is allowed to flow for removing at least part of its impurities to give a purified liquid. The liquid can flow through the filtering medium either by gravity, under pressure or can be forced upwardly through the filtering medium. This type of filtering medium has proved to be cheaper to build and used and is more efficient than those presently known.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: April 28, 1992
    Assignee: Serrener Consultation Inc.
    Inventors: Arnold Ross, Jean Shoiry, Subba Narasiah