Patents by Inventor Jacques DeCuyper

Jacques DeCuyper 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 treating cassiterite ore
    Patent number: 4482454
    Abstract: The present invention relates to a process for treating a cassiterite ore, characterized in that, just before the flotation operation, said ore is subjected to a preliminary flotation operation, using an amphoteric collector of formula: ##STR1## in which: R is R.sub.1 or R.sub.1 --O-- or ##STR2## R' is H, CH.sub.3, polyoxyalkyl or R(CH.sub.2).sub.3 or A.sub.q --Z, R" is H or A.sub.q --ZAp and A.sub.q are polymethylene chains,Z is selected from the carboxylic, sulfonic or phosphonic groups.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: November 13, 1984
    Assignee: Ceca S.A.
    Inventors: Jacques DeCuyper, Edwin Broekaert, Joris Van't Hoff