Patents by Inventor Betty W. Li

Betty W. Li 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).

  • Synthesis of (all-E)-2,7,-dimethylocta-2,4,6-triene-1,8-dial.sup.13 C.sub.4
    Patent number: 5386063
    Abstract: (all-E)-2,7,-dimethylocta-2,4,6-triene-1,8-dial-.sup.13 C.sub.4 is synthesized from commercially available and relatively inexpensive starting compounds, and the key starting compound is triethyl phosphonoacetate-.sup.13 C.sub.2. The .sup.13 C labeled dial is useful as an intermediate in synthesizing .sup.13 C labeled carotenoids.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: January 31, 1995
    Assignees: The Catholic University of America, The United States of America as represented by the Secretary of Agriculture
    Inventors: Frederick Khachik, Gary R. Beecher, Betty W. Li