Patents by Inventor Jeffrey Gordon Sharman

Jeffrey Gordon Sharman 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).

  • Treated lignosulfonates as additives for cementitous systems
    Publication number: 20040158033
    Abstract: A process for preparing a lignosulfonate additive for use as a dispersant in cement or concrete compositions comprises treating a lignosulfonate solution with salts of trivalent metals. Preferably, such salts comprise nitrates or sulphates of aluminum, iron, copper, or manganese.
    Type: Application
    Filed: February 6, 2003
    Publication date: August 12, 2004
    Inventors: Robert A.C. Benson, David Robert Cameron, Jeffrey Gordon Sharman, Juraj Strmen, Carmel R. Jolicoeur