Patents by Inventor Irving Yall

Irving Yall 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).

  • Phosphorus removal from wastewater
    Patent number: 3980557
    Abstract: Disclosed are methods and materials, involving the microorganism Acinetobacter phosphadevorus (NRRL B-8058), useful in the removal of phosphorus from waste water.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: September 14, 1976
    Assignee: University Patents, Inc.
    Inventors: Irving Yall, Norval Arthur Sinclair, Frank Andrew Roinestad, Charles Francis Russ