Patents Examined by Stephan Gravini
  • Method and apparatus reducing metal impurities in optical fiber soot preforms
    Patent number: 6935050
    Abstract: A method and apparatus for producing an optical fiber preform including a metal remover, which operates by adsorption, that removes gaseous transition metal impurities present in a process gas to be provided to a furnace for drying, doping or consolidation. The apparatus and method may reduce attenuation of the resultant optical fiber drawn from the preform.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: August 30, 2005
    Assignee: Corning Incorporated
    Inventors: Dana C. Bookbinder, Richard M. Fiacco, Cynthia B. Giroux