Patents by Inventor Aloysius X. Hiltgen

Aloysius X. Hiltgen 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).

  • Multi sorption process and system
    Patent number: 4237002
    Abstract: An improved process for treating a waste liquid containing impurities which inhibit the biological treatment of the liquid providing a first and a second sorbent treatment zone. The waste liquid is treated in the first sorbent treatment zone with a sorbent material which has previously been used to treat the liquid in the second zone. The waste liquid is passed through a biological treatment system and is subsequently received in the second sorbent treatment zone. The liquid is treated in the second zone with fresh activated sorbent material. After use of the sorbent material in the second sorbent treatment zone, the sorbent material in the second zone is transferred to the first sorbent treatment zone.Systems for the practice of the above process are also disclosed.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: December 2, 1980
    Assignee: Zurn Industries, Inc.
    Inventors: George E. Strudgeon, Aloysius X. Hiltgen