The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2017
Filed:
Jun. 24, 2014
Draka Comteq B.v., Amsterdam, NL;
Igor Milicevic, Amsterdam, NL;
Mattheus Jacobus Nicolaas Van Stralen, Amsterdam, NL;
Johannes Antoon Hartsuiker, Amsterdam, NL;
Gertjan Krabshuis, Amsterdam, NL;
Draka Comteq B.V., Amsterdam, NL;
Abstract
A method for manufacturing a precursor for a primary preform for optical fibers by an internal plasma deposition process including the steps of providing a hollow substrate tube, creating a first plasma reaction zone having first reaction conditions and depositing non-vitrified silica layers along at least a portion of the inner surface of the substrate tube, subsequently creating a second plasma reaction zone having second reaction conditions different from the first reaction conditions and depositing vitrified silica layers along at least a portion of the substrate tube, and cooling the substrate tube to produce the precursor for a primary preform.