Patents by Inventor James J. Lang

James J. Lang 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).

  • Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions
    Patent number: 4710304
    Abstract: This invention relates to a method for improving the utilization of water-soluble, high molecular weight (molecular weight above about 1,000,000) polyelectrolytes in the dewatering of aqueous suspensions. By aging a mixture of the polyelectrolyte and water for a period of at least 6 hours to form an aged solution the amount of polyelectrolyte required to effectively dewater an aqueous suspension may be reduced to as little as 50% of the amount required when an unaged solution is used.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: December 1, 1987
    Assignees: Joseph J. Campbell, Equivest, Inc.
    Inventor: James J. Lang