Patents by Inventor Eva C. Williams

Eva C. Williams 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).

  • Publication number: 20100068264
    Abstract: Localized drug delivery systems are effective means to administer therapeutic concentrations and controlled release of drugs. A delivery system consisting of non-ionic surfactant vesicles (niosomes) packaged within a biodegradable, temperature and pH sensitive hydrogel network was developed. Drug behaviors were modeled using a fluorescent dye with similar physical properties as therapeutic drugs for cancer. The niosomes were embedded into a biodegradable hydrogel providing a stable niosome environment. A cross linked chitosan was used as the hydrogel, which is a liquid at room temperature, and gels inside the body. Depending on the conditions to which individual niosomes are exposed, the release rate can be controlled to last from 24 hours to more than 3 months.
    Type: Application
    Filed: November 20, 2009
    Publication date: March 18, 2010
    Applicant: UNIVERSITY OF SOUTH FLORIDA
    Inventors: Norma Alcantar, Eva C. Williams, Ryan Toomey