Patents by Inventor Anthony M. F. Sun

Anthony M. F. Sun 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).

  • Patent number: 4806355
    Abstract: Living tissue or cells, for example, islets of Langerhans, are microencapsulated for implantation in the body for long term treatment of diabetes or other disease requiring organ transplantation. The microcapsules take the form of a biocompatible semi-permeable hydrogel membrane which permits the passage of materials and oxygen to the cells and metabolic products from the cells while retaining the cells encapsulated. The biocompatible semi-permeable membrane has an outer negatively-charged surface, which imparts to the microcapsules the ability to maintain long term effectiveness.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: February 21, 1989
    Assignee: Connaught Laboratories Limited
    Inventors: Mattheus F. A. Goosen, Geraldine M. O'Shea, Anthony M. F. Sun
  • Patent number: 4689293
    Abstract: Living tissue or cells, for example, islets of Langerhans, are microencapsulated for implantation in the body for long term treatment of diabetes or other disease requiring organ transplantation. The microcapsules take the form of a biocompatible semi-permeable hydrogel membrane which permits the passage of materials and oxygen to the cells and metabolic products from the cells while retaining the cells encapsulated. The biocompatible semi-permeable membrane has an outer negatively-charged surface, which imparts to the microcapsules the ability to maintain long term effectiveness.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: August 25, 1987
    Assignee: Connaught Laboratories Limited
    Inventors: Mattheus F. A. Goosen, Geraldine M. O'Shea, Anthony M. F. Sun
  • Patent number: 4492684
    Abstract: A slow release injectable insulin composition is provided which is able to control blood sugar levels over extended periods of time. The albumin is partially cross-linked using a concentration of glutaraldehyde which is less than 3.75% v/w of the albumin to form a matrix enclosing the insulin. The composition conveniently is provided in the form of microbeads.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: January 8, 1985
    Assignee: Connaught Laboratories Limited
    Inventors: Mattheus F. A. Goosen, Anthony M. F. Sun