Patents by Inventor Ashlynn L. Lee

Ashlynn L. Lee 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).

  • Composite hydrogels for delivery of biologically active materials
    Patent number: 8633296
    Abstract: A composite hydrogel comprises an amphiphilic triblock copolymer (ABA) and a loaded micelle bound by noncovalent interactions. The loaded micelle comprises a biologically active substance and an amphiphilic diblock copolymer (CD). The A blocks comprise a steroidal repeat unit (repeat unit 1) having both a backbone carbonate and a side chain bearing a steroid functional group. Each of the A blocks has a degree of polymerization of about 0.5 to about 4.0. The B block comprises a first poly(alkylene oxide) backbone. The C block comprises a second poly(alkylene oxide) backbone. The D block comprises a steroidal repeat unit (repeat unit 2) having both a backbone carbonate group and a side chain comprising a steroid functional group. The composite hydrogel is capable of controlled release of the biologically active substance.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: January 21, 2014
    Assignees: International Business Machines Corporation, Agency for Science, Technology and Research
    Inventors: Daniel J. Coady, Richard A. DiPietro, Amanda C. Engler, James L. Hedrick, Ashlynn L. Lee, Shrinivas Venkataraman, Yi Yan Yang