Patents by Inventor Joseph W. Stutts

Joseph W. Stutts 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).

  • Preparation of Fe chelates
    Patent number: 4558145
    Abstract: A new process for the preparation of HO-EDTA.FE (5% Fe) is disclosed. It is based on the oxidation of Fe.degree. by nitric acid in the presence of HO-EDTA Na.sub.3 to generate the chelate in the Fe.sup.+2 state. The Fe.sup.+2 chelate is then converted to the desired Fe.sup.+3 chelate by air oxidation.
    Type: Grant
    Filed: October 21, 1983
    Date of Patent: December 10, 1985
    Assignee: Ciba Geigy Corporation
    Inventors: Nelson Smith, Joseph W. Stutts
  • Treatment of iron deficiencies in plants with iron complexes of ethylene-bis-(.alpha.-imino-2-hydroxyaryl acetic acids)
    Patent number: 3981712
    Abstract: Compositions and methods useful for the treatment of iron deficiencies in plant utilizing new iron complexes of ethylene-bis(.alpha.-imino-2-hydroxyaryl-acetic acids) containing sulfonic acid groups are disclosed in which the molar ratio of iron to ligand is from about 1.1:1 to 3:1. These complexes are stable at pH values of from about 6.0 to 9.0.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: September 21, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Harris E. Petree, Joseph W. Stutts