Patents by Inventor Mark C. Bertz

Mark C. Bertz 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).

  • Method for forming a porous glass preform
    Patent number: 5211732
    Abstract: A method and apparatus for rapidly forming a porous glass preform is provided in which an array of burners is oscillated along a path parallel to the longitudinal axis of the preform. Unlike existing soot deposition techniques, the oscillation amplitude is limited so that each burner deposits soot on only a portion of the preform, e.g., 20% of the preform. By controlling inter-burner variability and the air flow in the burner-array/preform region, preforms having substantially uniform axial properties are obtained notwithstanding the fact that different burners are used to laydown different parts of the preform.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: May 18, 1993
    Assignee: Corning Incorporated
    Inventors: John S. Abbott, Mark C. Bertz, James H. Faler, William Schirmer, III, John G. Williams
  • Apparatus for forming a porous glass preform
    Patent number: 5116400
    Abstract: Apparatus for rapidly forming a porous glass preform is provided in which an array of burners is oscillated along a path parallel to the longitudinal axis of the preform. The oscillation amplitude is limited so that each burner deposits soot on only a portion of the preform, e.g., 20% of the preform. By controlling inter-burner variability and the air flow in the burner-array/preform region, preforms having substantially uniform diameter and axial properties are obtained.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: May 26, 1992
    Assignee: Corning Incorporated
    Inventors: John S. Abbott, Mark C. Bertz, James H. Faler, William Schirmer, III, John G. Williams