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. 01, 2003
Filed:
Jul. 30, 2001
Emmanuel Petitfrere, Lille, FR;
Gérard Lavanant, Lambersart, FR;
Benoit Gouez, Hickery, NC (US);
Alcatel, Paris, FR;
Abstract
A method of manufacturing a preform, the method comprising rotating a primary preform about an axis X, establishing relative displacement in translation between the preform and a plasma torch, and introducing a glass powder into the plasma flame, the glass powder being accelerated prior to penetrating into the plasma flame by an accelerator gas introduced into the flow of glass powder, said process being performed in an enclosure and said introduction being performed into an atmosphere at a regulated pressure lower than the pressure outside the enclosure. Apparatus for manufacturing the preform comprises an enclosure connected to a unit for regulating the pressure inside the enclosure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile