Patents by Inventor Portonovo S. Ayyaswamy

Portonovo S. Ayyaswamy 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).

  • Hollow bone mineral-like calcium phosphate particles
    Publication number: 20020172715
    Abstract: Hollow particles having a shell substantially composed of calcium-phosphate, methods for preparing the same, and methods of use are disclosed. The particles are obtained by differential immersion of silica-based, calcium and phosphate containing glass particles.
    Type: Application
    Filed: May 1, 2002
    Publication date: November 21, 2002
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: Shulamith Radin, Paul Ducheyne, Sylvie Falaize, Portonovo S. Ayyaswamy
  • Hollow bone mineral-like calcium phosphate particles
    Patent number: 6416774
    Abstract: Hollow particles having a shell substantially composed of calcium-phosphate, methods for preparing the same, and methods of use are disclosed. The particles are obtained by differential immersion of silica-based, calcium and phosphate containing glass particles.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: July 9, 2002
    Assignee: The Trustees of the University of Pennsyvania
    Inventors: Shulamith Radin, Paul Ducheyne, Sylvie Falaize, Portonovo S. Ayyaswamy
  • Bioactive, degradable composite for tissue engineering
    Patent number: 6328990
    Abstract: Bioactive, degradable composite material and composite material microspheres were produced using a new solid-in-oil-in-water method. Compositions and methods for tissue engineering and drug delivery are provided.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: December 11, 2001
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Paul Ducheyne, Portonovo S. Ayyaswamy, Qing-Qing Qiu