Patents by Inventor Robert O. Stillman

Robert O. Stillman 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).

  • Patent number: 5599360
    Abstract: A process for manufacturing charcoal and intermediate char-containing articles from paper and/or paperboard comprises forming an aqueous pulp of cellulose fibers from the paper or paperboard and blending the aqueous pulp with comminuted char in a dry or slurried state. The resulting mixture may be shaped into any desired form, such, for example, as briquettes, by forcing the mixture into a perforated die or porous mold to form substantially rigid articles. The formed product is dried in a kiln.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: February 4, 1997
    Inventor: Robert O. Stillman