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. 20, 2001
Filed:
Sep. 19, 2000
Applicant:
Inventors:
Claude F. M. Gille, Chateau Landon, FR;
Alain Kerdoncuff, Vincennes, FR;
Michel Prassas, Vulaines sur Seine, FR;
Assignee:
Corning Incorporated, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/516 ;
U.S. Cl.
CPC ...
C03B 3/516 ;
Abstract
According to the invention, a) at least the first and second compositions of this material in the fluid phase are prepared, b) a sheet (,) of the first composition is poured continuously onto a flat support (,), c) a sheet (,) of the second composition is poured continuously onto sheet (,) of the first composition, and d) the thermal interdiffusion of the materials of the two sheets is ensured so as to obtain the desired gradient of composition in the cooled bar.