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. 24, 2001
Filed:
Mar. 30, 1999
Applicant:
Inventors:
Evelyn M. Deliso, Corning, NY (US);
Claud E. Lacy, Painted Post, NY (US);
Deborah L. Marlatt, Addison, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7018 ;
U.S. Cl.
CPC ...
C03B 3/7018 ;
Abstract
A method for controlling the refractive index achieved using a fluorine dopant gas, wherein CF,is employed as the dopant gas, and the soot preform is doped using the CF,for a time and temperature sufficient to result in a decrease in fluorine dopant nearest the surface which is in contact with the CF,gas.