Patents by Inventor William C. Krell

William C. Krell 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 and composition for producing a stabilized fill material
    Patent number: 4374672
    Abstract: A stabilized fill material and method of producing the stabilized fill material comprising approximately 45-80% fly ash, 1-6% cement, and 20-50% water by weight, and mixing the material and depositing it directly in water by equipment supported on previously deposited fill material to form a causeway or the like. The fill material may include up to 2% lime by weight.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: February 22, 1983
    Assignee: The Detroit Edison Company
    Inventors: Joseph Funston, William C. Krell, Franklin V. Zimmer