Patents by Inventor John N. Karnemaat

John N. Karnemaat 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 animal waste
    Patent number: 3939280
    Abstract: A process of treating poultry manure with acid, formaldehyde and urea to obtain a pathogen-free product suitable as a feedstuff for ruminant animals.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: February 17, 1976
    Assignee: General Environmental Systems Co., Inc.
    Inventor: John N. Karnemaat