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:
Jul. 04, 2006
Filed:
Jun. 05, 2003
Applicants:
Martinus Johannes Marinus Jozeph Swarts, Veldhoven, NL;
Dennis R. Simons, Eindhoven, NL;
Inventors:
Martinus Johannes Marinus Jozeph Swarts, Veldhoven, NL;
Dennis R. Simons, Eindhoven, NL;
Assignee:
Draka Fibre Technology B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method of manufacturing a solid preform by moving a heat source parallel to the longitudinal axis of a substrate tube, whose inner surface is coated with one or more doped or undoped glass layers, so as to collapse the substrate tube into the solid preform in a number of passes, with an etchant being supplied to the interior of the substrate tube after a number of passes of the heat source.