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:
Oct. 28, 2008
Filed:
Nov. 30, 2001
Applicants:
Giacomo Stefano Roba, Monza, IT;
Massimo Nutini, Milan, IT;
Inventors:
Giacomo Stefano Roba, Monza, IT;
Massimo Nutini, Milan, IT;
Assignee:
Prysmian Cavi E Sistemi Energia S.R.L., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
C03B 37/018 (2006.01);
U.S. Cl.
CPC ...
Abstract
Multi-flame burner wherein each flame is separated with respect to the neighboring flame by at least one separating tube made of a heat resistant material, for example, quartz glass or ceramic material. The burner also has a plurality of co-axial pipes, preferably made of a metallic material. The cross section of the upper end of the separating tube can be modified in order to increase the deposition rate of the burner. Methods for manufacturing optical fibre preforms by vapour deposition using the multi-flame deposition burners.