Patents by Inventor Danie A. Claeys

Danie A. Claeys 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).

  • Etch bleaching liquid with iron(III)ions
    Patent number: 4203765
    Abstract: An aqueous acidic etch-bleach solution comprising hydrogen peroxide, iron(III)ions and inorganic anions that form a silver salt having a solubility product not greater than 1.times.10.sup.-8 determined in water at 20.degree. C., characterized in that such solution contains in the dissolved state the combination of citric acid and a polymer containing alkylene oxide units for improved stabilization of the hydrogen peroxide.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: May 20, 1980
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Danie A. Claeys, Albert A. Reyniers, Wilhelmus Janssens