Patents by Inventor Peter G. Mason

Peter G. Mason 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).

  • Process for the recovery of gold from refractory ores by pressure oxidation
    Patent number: 4552589
    Abstract: A process for recovering precious metals from a refractory ore by forming a slurry which is heated to a temperature in excess of about 150.degree. C. at an oxygen partial pressure in excess of about 10 psia for an effective amount of time to form a partially oxidized slurry which is then subjected to carbon-in-leach treatment to separate the precious metals.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: November 12, 1985
    Assignee: Getty Oil Company
    Inventors: Peter G. Mason, Frank D. Wicks, John C. Gathje