Patents by Inventor Ronald L. Keller

Ronald L. Keller 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 production of alumina and alumina compounds from wastes
    Patent number: 4348366
    Abstract: A process for the recovery of substantially all of the aluminum from aluminum bearing waste products which includes a method for the commercial production of alumina and compounds of alumina.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: September 7, 1982
    Inventors: Raymond J. Brown, Ronald L. Keller, Charles F. Lang