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:
Nov. 05, 2002
Filed:
Dec. 22, 1995
Applicant:
Inventors:
Benoît Gouez, Paris, FR;
Pierre Ripoche, Pithiviers, FR;
Assignee:
Alcatel Cable, Clichy Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7027 ;
U.S. Cl.
CPC ...
C03B 3/7027 ;
Abstract
The method includes axially modulating at least one plasma build-up pass in order to improve the opto-geometrical properties of the preform. The modulation preferably takes place during the final passes of plasma build-up and takes place by modulating the build-up grain flow rate. The diameter of the preform is evaluated ( ), and a build-up control device ( ) regulates grain flow rate ( ) in application of the above method.