Patents by Inventor Wilson L. Lin

Wilson L. Lin 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).

  • Recovery of precious metals
    Patent number: 4992200
    Abstract: Recovery of precious metals such as gold and silver from aqueous cyanide solutions thereof, by contact with a reagent containing a guanidine functionality. The guanidine reagent extracts the precious metal from the aqueous solution which is subsequentily stripped from the guanidine reagent and recovered by conventional methods. Certain novel guanidine compounds suitable for extracting gold and silver are disclosed.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: February 12, 1991
    Assignee: Henkel Corporation
    Inventors: Wilson L. Lin, Phillip L. Mattison, Michael J. Virnig
  • Recovery of precious metals
    Patent number: 4895597
    Abstract: Recovery of precious metals such as gold and silver from aqueous cyanide solutions thereof, by contact with a reagent containing a guanidine functionality. The guanidine reagent extracts the precious metal from the aqueous solution which is subsequently stripped from the guanidine reagent and recovered by conventional methods. Certain novel guanidine compounds suitable for extracting gold and silver are disclosed.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: January 23, 1990
    Assignee: Henkel Corporation
    Inventors: Wilson L. Lin, Phillip L. Mattison, Michael J. Virnig
  • Recovery of precious metals
    Patent number: 4814007
    Abstract: Recovery of precious metals such as gold and silver from aqueous cyanide solutions thereof, by contact with a reagent containing a guanidine functionality. The guanidine reagent extracts the precious metal from the aqueous solution which is subsequently stripped from the guanidine reagent and recovered by conventional methods. Certain novel guanidine compounds suitable for extracting gold and silver are disclosed.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: March 21, 1989
    Assignee: Henkel Corporation
    Inventors: Wilson L. Lin, Phillip L. Mattison, Michael J. Virnig