Patents by Inventor George W. Cadwallader

George W. Cadwallader 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 preparing medium density granular sodium tripolyphosphate
    Patent number: 5215731
    Abstract: A method of producing medium density granular sodium tripolyphosphate by compacting sodium tripolyphosphate fines with dried sodium orthophosphate salt followed by calcining the compacted mixture at a temperature in the range of from about 300.degree. C. to about 600.degree. C.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: June 1, 1993
    Assignee: Monsanto Company
    Inventors: George W. Cadwallader, Louis A. Highfill
  • Process for preparing sodium tripolyphosphate
    Patent number: 5004589
    Abstract: There is disclosed a process from producing granular sodium tripolyphosphate of predetermined particle size by means of calcining sodium orthophosphate dried from water solution and milled to a predetermined particle size. The tripolyphosphate is produced having approximately the same particle size distribution as the orthophosphate feed. Moisturizing the feed prior to calcining increases the assay of the product.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: April 2, 1991
    Assignee: Monsanto Company
    Inventors: George W. Cadwallader, Louis A. Highfill, Gregory D. Kurdys, Richard S. Turigliatto