Patents by Inventor Emanuel Maxwell

Emanuel Maxwell 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).

  • Method of removing sulfur and other contaminants from the coal in coal-oil slurries
    Patent number: 4466362
    Abstract: An improved method of removing pyritic sulfur and other contaminants from the coil in a coal-oil slurry. In such a slurry, raw pulverized coal is suspended in fuel oil. In practicing the process, the slurry is heated to a temperature of about 220.degree. C., at which temperature hexagonal pyrrhotite is converted to highly ferromagnetic monoclinic pyrrhotite which can be removed by a magnetic separator.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: August 21, 1984
    Assignee: Massachusetts Institute of Technology
    Inventors: Emanuel Maxwell, David R. Kelland