Patents by Inventor Maurice D. Little

Maurice D. Little 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).

  • Sludge treatment process
    Patent number: 5281341
    Abstract: A method of treating a liquid waste or process stream that includes a sludge component and that enhances sludge treatment or stabilization. The sludge is acidified to a pH of less than 4.0 in an oxygen enriched environment. A nitrous acid level is maintained sufficiently high to kill pathogens, in a closed chamber so that the nitrous acid won't be lost from the chamber through volatilization.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: January 25, 1994
    Assignee: Administrators of the Tulane Educational Fund
    Inventors: Robert S. Reimers, Maurice D. Little
  • Method of treating sewage
    Patent number: 4793927
    Abstract: A method of treating sewage is disclosed. Sewage is mixed with an ammonia source, and the mixture is formed into a substantially impermeable mass. The substantially impermeable nature of the mixture increases the ammonia concentration therein and substantially completely destroys all viable parasites. When the impermeable mass is formed by addition of cement and silicate, a strongly alkaline environment is created that kills bacteria and viruses. The resulting end product is a friable mass that is substantially free of pathogens and suitable for unrestricted reuse.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: December 27, 1988
    Assignees: Tulane Medical Center of Tulane Univ., Chemfix Technologies, Inc.
    Inventors: Peter P. Meehan, Robert S. Reimers, Thomas G. Akers, Maurice D. Little