Patents by Inventor Jean-Philippe J. de Sandro

Jean-Philippe J. de Sandro 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 and apparatus for providing a uniform coating thickness along an axial direction within a substrate tube
    Patent number: 6901775
    Abstract: A method and apparatus for providing a uniform coating thickness along an axial direction within an internal portion of a substrate tube is disclosed. A gas delivery unit is configured to coat the internal portion of the substrate tube. The gas delivery unit includes an insert. At least one of an inner diameter of the insert, a length of the insert, a gap between the insert and the substrate tube, and a flow of the gas mixture delivered to the substrate tube is configured to provide the uniform coating thickness along the axial direction.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: June 7, 2005
    Assignee: Corning Incorporated
    Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
  • Method and apparatus for reducing stress between depositions within a substrate tube
    Patent number: 6862900
    Abstract: A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first halogen concentration and the second section has a second halogen concentration. At least one of a partial pressure of the second halogen provided to a substrate tube and a temperature of the substrate tube is configured to affect the concentration of the second halogen in the second section. Optical fiber embodiments are also included.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 8, 2005
    Assignee: Corning Incorporated
    Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
  • Method and apparatus for reducing stress between depositions within a substrate tube
    Publication number: 20030056549
    Abstract: A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first halogen concentration and the second section has a second halogen concentration. At least one of a partial pressure of the second halogen provided to a substrate tube and a temperature of the substrate tube is configured to affect the concentration of the second halogen in the second section. Optical fiber embodiments are also included.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 27, 2003
    Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder
  • Method and apparatus for providing a uniform coating thickness along an axial direction within a substrate tube
    Publication number: 20030056548
    Abstract: A method and apparatus for providing a uniform coating thickness along an axial direction within an internal portion of a substrate tube is disclosed. A gas delivery unit is configured to coat the internal portion of the substrate tube. The gas delivery unit includes an insert. At least one of an inner diameter of the insert, a length of the insert, a gap between the insert and the substrate tube, and a flow of the gas mixture delivered to the substrate tube is configured to provide the uniform coating thickness along the axial direction.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 27, 2003
    Inventors: Jean-Philippe J. de Sandro, Keith L. House, Joohyun Koh, Prantik Mazumder