Patents by Inventor Russell B. Mait

Russell B. Mait 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).

  • Tobacco recovery from stemmery discards
    Patent number: 4340142
    Abstract: A method for separating tobacco and sand in stemmery discards is disclosed. The sand tobacco mixture is passed through dryer (14), to reduce the moisture content, agitated by conveyor (16), passed through sieve (18), to obtain the correct particle size and to mechanically agitate the mixture, and is then passed through electrostatic separators (24) and (25) to separate the sand from the tobacco. Portions of the electrostatically separated sand tobacco mixture may be passed through another electrostatic separator (26) to achieve a further separation of sand and tobacco.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: July 20, 1982
    Assignee: Philip Morris Incorporated
    Inventors: Roger Z. de la Burde, Russell B. Mait, Francis V. Utsch