Patents by Inventor Philip Joseph Leeming

Philip Joseph Leeming 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).

  • Compounds and compositions for use as foaming or frothing agents in ore and coal flotation
    Patent number: 7576244
    Abstract: Compounds of formula (I) wherein R1 and R2 are each independently C1-C2 alkyl, and m is 1, 2, 3, 4, or 5 and compositions of formula (II) wherein R1 and R2 are each independently C1-C4 alkyl, and n is an integer >_0 and wherein the average molar value of n for the total of the compounds of formula (II) in said composition is in the range of (1) to (3) and methods for production thereof.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: August 18, 2009
    Assignee: Huntsman Corporation Australia Pty. Limited
    Inventors: Philip Joseph Leeming, Stewart John Knight, Salvatore Lazzaro, Jeffrey Roy Aston, David Hayshiv Parris