Patents by Inventor Peter B. Johnsen

Peter B. Johnsen 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).

  • Uniform and quantitative evaluation of aroma emitting substances
    Patent number: 5313821
    Abstract: The present invention is drawn to evaluation of the aroma of aroma-emitting substances, such as agricultural grains and oil seeds, in a safe and quantitative way. This is accomplished by causing a known volume of non-toxic gas to pass through the aroma-emitting substance, absorb the aroma, and deliver it to an evaluator. This enables the evaluator to sniff the aroma and thereby make gross quantitative evaluations with respect to the strength of any particular odor of the substance.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: May 24, 1994
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Karen L. Bett, Peter B. Johnsen
  • Stimulation and enhancement of feeding in herbivorous fish
    Patent number: 4693897
    Abstract: Methods for stimulating or enhancing feeding of herbivorous fish are disclosed comprising presenting the fish with an edible composition comprising a stimulatory amount of at least one of aspartic acid, glutamic acid or citric acid. In accordance with a preferred embodiment, preference spectra of herbivorous fish are determined and used to tailor feeding materials for improved, stimulated or enhanced feeding.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: September 15, 1987
    Assignee: Monell Chemical Senses Center
    Inventors: Peter B. Johnsen, Michael A. Adams