Patents by Inventor Edgar Espana

Edgar Espana 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: 20050026279
    Abstract: The present invention relates to the discovery of a method of enzymatically, consistently and reproducibly, isolating a viable, intact limbal epithelial sheet that retains stem cell characteristics in the basal epithelium. The method comprises the steps of: a) obtaining limbus from a biopsy of a donor eye of a living individual, a living-related individual, or from a cadaveric eye, the limbus comprising limbal epithelium and an underlying stroma; b) contacting the limbus with a solution comprising Dispase 2, for a period of time and under conditions sufficient to loosen a limbal epithelial sheet from the stroma, thereby forming a loosely adherent limbal epithelial sheet; and c) mechanically separating the loose epithelial sheet from the underlying stroma, thereby isolating a substantially intact, viable, limbal epithelial sheet.
    Type: Application
    Filed: April 28, 2004
    Publication date: February 3, 2005
    Inventors: Scheffer Tseng, Edgar Espana