Patents by Inventor Lee Fisher Robinson

Lee Fisher Robinson 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).

  • Extraction of valuable metal by acid cyanide leach
    Patent number: 6423117
    Abstract: The invention is concerned with techniques and apparatus suitable for extraction of at least one valuable metal such as one or more of: gold, platinum, silver, cobalt, nickel, molybdenum, and manganese from a starting material which, by way of example, could be freshly mined mixed ore containing both oxidic and refractory (sulphide) ores.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 23, 2002
    Inventor: Lee Fisher Robinson
  • Photoreaction
    Patent number: 6370815
    Abstract: Photosynthetic organisms are grown in a tube having a gas inlet at one end and a gas outlet at the other. The tube containing a rotor having vanes adapted to wipe the inside surface, the tube being disposed at an angle to the horizontal in a bath containing liquid, the gas inlet being lowermost.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: April 16, 2002
    Inventors: Stephen Skill, Lee Fisher Robinson