Patents by Inventor Harry J. Kring

Harry J. Kring 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).

  • Process for treating waste water
    Patent number: 4200526
    Abstract: A purification process for waste water from a textile plant and other manufacturing processes. After preliminary filtering to remove foreign particles, the waste water is treated with a reducing agent, if needed, and the pH adjusted to 8.0-9.5. The waste water is then treated with a flocculating agent. After further treatment in a clarifier, the waste water is passed through a sand filter to remove any residual suspended solids. The pH is adjusted to below about 6.0 and the waste water is then subjected to reverse osmosis.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: April 29, 1980
    Assignee: Gerber Products Company
    Inventors: Earl W. Johnson, Malcolm J. Reider, Robert Anewalt, Harry J. Kring