Patents Assigned to The Children's Hospital of Philadelphi
  • Derivatized polyurethane compositions which exhibit enhanced stability in biological systems and methods of making the same
    Patent number: 6689861
    Abstract: The invention relates to methods of making polyurethane derivatives which can be readily further derivatized using stabilizing agents such as anti-calcification agents, anti-thrombogenesis agents, and chemical and mechanical degradation-inhibiting agents. The invention also includes methods of making polyurethane derivatives so further derivatized and to polyurethanes derivatives made using such methods.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: February 10, 2004
    Assignee: The Children's Hospital of Philadelphi
    Inventors: Robert J. Levy, Ivan Alferiev