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. 30, 2017
Filed:
May. 19, 2015
Draka Comteq B.v., Amsterdam, NL;
Igor Milicevic, Amsterdam, NL;
Gertjan Krabshuis, Amsterdam, NL;
Peter Gerharts, Amsterdam, NL;
Johannes Antoon Hartsuiker, Amsterdam, NL;
Mattheus Jacobus Nicolaas van Stralen, Amsterdam, NL;
Draka Comteq B.V., Amsterdam, NL;
Abstract
A method for manufacturing an optical preform including the steps of providing a substrate tube having deposited layers of glass on an inside surface thereof, increasing an outer diameter of the substrate tube by means of applying a traversing heat source to heat the substrate tube to above a softening temperature thereof and by providing an internal pressure in the substrate tube higher than an ambient pressure, and collapsing the substrate tube of increased outer diameter by means of applying the traversing heat source to heat the substrate tube to above the softening temperature thereof such that an optical preform is manufactured.