Patents by Inventor Robin Eifert

Robin Eifert 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 and apparatus for the production of secondary metabolites by the maintenance-state cultivation of microorganisms
    Patent number: 4167450
    Abstract: A fermentation vessel is used to grow a cell mass and maintain it in a maintenance energy state. In this state the mass of the cell material is maintained substantially constant, and fresh medium containing an energy source is introduced to the vessel at a rate sufficient to sustain cell viability but insufficient to support growth of the cell mass. Fluid with suspended cells is pumped from the vessel to a separator which separates a fraction of the fluid from the cells and discharges the fraction, the unfiltered portion of the fluid and substantially all of the cells being returned to the vessel, the discharged fraction containing useful secondary metabolites.
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: September 11, 1979
    Assignee: University of New Hampshire
    Inventors: William R. Chesbro, Robin Eifert, Thomas Evans