Patents by Inventor Michael Thomas Owsiany

Michael Thomas Owsiany 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 of collapsing a tube for an optical fiber preform
    Patent number: 6718800
    Abstract: The present invention provides a method of preparing preforms for optical fibers. The invention allows one to remove or significantly reduce undesirable refractive index variations in the central portion of the optical fibers. The method of preparing the preform having a central duct includes the steps of a first collapsing step, an etching step and a second collapsing step. The first collapsing step reduces the size of the central duct without closing the central duct by heating the preform at a first preform collapsing temperature. A portion of the last deposited layer of the core glass layers is etched by flowing an etchant gas through the central duct at a lower temperature than the preform collapsing temperature. The preform is finally collapsed at a second collapsing temperature to close the central duct of the preform and form a solid rod.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: April 13, 2004
    Assignee: Fitel USA Corp.
    Inventors: David Mazzarese, George Edward Oulundsen, III, Timothy Francis McMahon, II, Michael Thomas Owsiany
  • Method of preparing preforms for optical fibers
    Publication number: 20020157426
    Abstract: The present invention provides a method of preparing preforms for optical fibers. The invention allows one to remove or significantly reduce undesirable refractive index variations in the central portion of the optical fibers. The method of preparing the preform having a central duct includes the steps of a first collapsing step, an etching step and a second collapsing step. The first collapsing step reduces the size of the central duct without closing the central duct by heating the preform at a first preform collapsing temperature. A portion of the last deposited layer of the core glass layers is etched by flowing an etchant gas through the central duct at a lower temperature than the preform collapsing temperature. The preform is finally collapsed at a second collapsing temperature to close the central duct of the preform and form a solid rod.
    Type: Application
    Filed: January 20, 2000
    Publication date: October 31, 2002
    Inventors: David Mazzarese, George Edward Oulundsen, Timothy Francis McMahon, Michael Thomas Owsiany