Patents by Inventor S. Bennett Willis

S. Bennett Willis 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 the preparation of ferric chelate solutions of alkali metal polyamino succinic acids
    Patent number: 5763634
    Abstract: A method for the preparation of concentrated, stable iron chelate solutions of alkali metal polyamino succinic acids is disclosed. The method involves the co-feeding of an alkaline alkali-metal succinate solution and a ferric salt solution into a vessel.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: June 9, 1998
    Assignee: The dow Chemical Company
    Inventors: George M. St. George, David A. Wilson, S. Bennett Willis
  • Method of decoloration of triethylenetetramine using sulfonic acid ion exchange resins
    Patent number: 4731165
    Abstract: A process of decoloring crude triethylenetetramine (TETA) is disclosed. In the disclosed and preferred procedure, a sulfonic acid ion exchange resin acts on the crude TETA to enable subsequent distillation at elevated temperature to obtain decolored TETA.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: March 15, 1988
    Assignee: The Dow Chemical Company
    Inventors: Dennis L. Niebruegge, Timothy J. Dempsey, S. Bennett Willis