Patents by Inventor Tim M. Jessup

Tim M. Jessup 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).

  • Depressant for flotation separation of polymetallic sulphide ores
    Patent number: 5693692
    Abstract: A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing. The depressant consists of a chemically-modified carbohydrate polymer, a polyacrylate and low foaming lignin sulphonate.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: December 2, 1997
    Assignees: Huntsman Petrochemical Corp., Falconbridge Limited
    Inventors: Srdjan Bulatovic, Tim M. Jessup, James F. Jackson, Gordon Leighton
  • Depressant for flotation separation of polymetallic sulphidic ores
    Patent number: 5049612
    Abstract: A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and forthing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing. The depressant consists of a cross-linked starch chemically combined with a polyacrylate and sugar free lignin sulphonate.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: September 17, 1991
    Assignee: Falconbridge Limited
    Inventors: Srdjan Bulatovic, Tim M. Jessup, James F. Jackson
  • Depressant for flotation separation of polymetallic sulphidic ores
    Patent number: 4877517
    Abstract: A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing. The depressant consists of a cross-linked starch chemically combined with a polyacrylate and sugar free lignin sulphonate.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: October 31, 1989
    Assignee: Falconbridge Limited
    Inventors: Srdjan Bulatovic, Tim M. Jessup