Patents by Inventor Willis A. Heisey

Willis A. Heisey 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 wool scouring wastes
    Patent number: 4059516
    Abstract: An improved process for treating wool scouring wastes liquors in which the waste liquors are first cooled before acid and collodial bentonite are added; then the flocculated liquor is reheated to a temperature in the range of 130.degree. to 150.degree. to separate the waste liquor into a supernatent liquor and a settled drainable sludge and finally dewatering the settled sludge by centrifugal separation.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: November 22, 1977
    Assignee: Geo. W. Bollman & Co., Inc.
    Inventor: Willis A. Heisey