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:
Jan. 12, 2021
Filed:
Sep. 11, 2017
Applicant:
Corning Incorporated, Corning, NY (US);
Inventor:
Martin Hempstead, Painted Post, NY (US);
Assignee:
Corning Incorporated, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/00 (2006.01); C03B 37/014 (2006.01);
U.S. Cl.
CPC ...
H05B 3/0033 (2013.01); C03B 37/01446 (2013.01); C03B 37/01453 (2013.01); C03B 2201/10 (2013.01); C03B 2201/12 (2013.01);
Abstract
An improved process for preheating and doping a preform having a consolidated glass core and a silica soot cladding surrounding core involves waveguiding millimeter wavelength electromagnetic radiation into the preform to cause heating of the preform within the interior via absorption of the electromagnetic radiation by silica in the preform while the preform is exposed to a gas phase dopant.