Patents by Inventor Wen H. Huang

Wen H. Huang 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 extraction of aluminum from aluminum ores
    Patent number: 4069296
    Abstract: Aluminum may be recovered from various raw materials including kaolinite, alunite, coal ash and slag, and both raw and spent oil shale, by contacting such materials with an aqueous solution of hydrofluoric acid, followed by removal of the insoluble residues remaining suspended in solution and the precipitation of hydrated aluminum hydroxide from the clear solution by basification with an alkaline agent.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: January 17, 1978
    Inventor: Wen H. Huang
  • Aluminum extraction process
    Patent number: 3958982
    Abstract: A process for the extraction and recovery of aluminum from aluminum-containing raw materials by contacting said raw materials with fruit juices and complexing organic acids.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: May 25, 1976
    Inventor: Wen H. Huang