Patents by Inventor Alfred Stewart, Jr.

Alfred Stewart, Jr. 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).

  • Method of treating waste water
    Patent number: 4981599
    Abstract: A method for treating industrial waste water prior to its discharge into the city or county sewer system is provided. The method includes introducing into the waste water an iron-containing compound, a hydroxide and a flocculating agent. This method results in the formation of a sludge cake layer on top of the waste water. The sludge cake is then removed, and the treated waste water is discharged into the sewer system.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: January 1, 1991
    Assignee: Tip Top Poultry, Inc.
    Inventor: Alfred Stewart, Jr.