Patents by Inventor Sharon M. Mead

Sharon M. Mead 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).

  • Cholesteric liquid crystal formulations and time/temperature monitoring means
    Patent number: 4859360
    Abstract: Described are cholesteric liquid crystal formulations suitable for use as indicators of time and/or temperature, and methods for reliably characterizing and reproducing initial and subsequent batches of such cholesteric liquid crystal formulations. The formulations have a time-dependent, temperature-dependent limit in a pseudo-irreversible liquid crystal phase wherein when said limit is exceeded, the formulations exhibit a color change which is irreversible by cooling.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: August 22, 1989
    Assignee: Biosynergy, Inc.
    Inventors: Fred K. Suzuki, Sharon M. Mead, Noble H. Yoshida, Robert H. Dobberstein