Patents by Inventor Eileen M. Diakun

Eileen M. Diakun 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).

  • Patent number: 4810410
    Abstract: It is desired to enhance the ability of hydrogen peroxide and persalts at wash temperatures of around to C., in order to use less energy and to minimize damage to various fabric finishes. It has been proposed in the past to use transition metal compounds, including cobaltous compounds for this purpose, but the literature is self-conflicting in the way to do this. In repeat trials the simple cobaltous salts did not show much activation.The invention provides a class of activators for persalts and hydrogen peroxide comprising cobalt III ammine complexes, preferably containing 4 or 5 ammine ligands obeying the formula:Co[(NH.sub.3).sub.n M.sub.m B.sub.b T.sub.t Q.sub.q ] Y.sub.yPreferred complexes contain a chloride, bromide, hydroxyl or water ligand.Such complexes can activate particularly well at above about pH10.2, which can vary from complex to complex, and retain activity in the presence of normal concentrations of many heavy duty washing compositions.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: March 7, 1989
    Assignee: Interox Chemicals Limited
    Inventors: Eileen M. Diakun, Christopher T. Wright