Patents Represented by Law Firm Woodcock Washburn Kurtz Mackiewicw & Norris LLP
  • Method of forming a porous glass substrate
    Patent number: 5676720
    Abstract: A glass material is formed from SiO.sub.2, CaO, Na.sub.2 O and P.sub.2 O.sub.5 and the porous, non-crystalline structure is most preferably created by melting the constituents, cooling and pulverizing the resulting glass, and then forming and hot pressing the powder. The glass of the present invention may be formed to produce templates that are useful for various indications, as well as granules that may be formed into a paste.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 14, 1997
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Paul Ducheyne, Ahmed El-Ghannam, Irving Shapiro