Patents by Inventor John M. Wilhelm

John M. Wilhelm 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).

  • Method of reducing emissions from soils
    Patent number: 5656673
    Abstract: A method of reducing emissions from fumigant-injected soils wherein a potassium thiosulfate solution is applied to the soil surface. The method has been found to be effective for chloropicrin treated soils as well as soils treated with 1,3-dichloropropene The method provides the additional benefit of adding nutrient to the soil.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: August 12, 1997
    Assignee: Niklor Chemical Co., Inc.
    Inventors: John M. Wilhelm, Stephen N. Wilhelm