Patents by Inventor Barend C. Joubert

Barend C. Joubert 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).

  • Curing of tobacco leaf
    Patent number: 4470422
    Abstract: A method of, and apparatus for, curing tobacco leaf in a curer barn. Air is caused to circulate through the barn to dry the leaf. The temperature of the air is controlled to maintain a predetermined temperature or humidity difference between upper and lower zones inside the barn, within a predetermined tolerance. The result is that the curing process is optimally controlled by the condition of the leaf itself and independently of ambient conditions.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: September 11, 1984
    Assignee: Modsa (Proprietary) Limited
    Inventors: Barend C. Joubert, Jan H. de Lange