Glass manufacturing – Processes – Forming product or preform from molten glass
Reexamination Certificate
2003-11-27
2009-02-10
Griffin, Steven P. (Department: 1791)
Glass manufacturing
Processes
Forming product or preform from molten glass
C065S099200, C065S032500, C065S032100, C065S029180, C065S029120
Reexamination Certificate
active
07487649
ABSTRACT:
The present invention provides a manufacturing method of a glass substrate for an image display device having high picture quality. The reducing force in a float furnace is controlled to be decreased so that Sn++ content on a surface of the glass substrate forming an Ag electrode is a predetermined value or less. When the resultant Sn++content on the surface of the glass substrate forming the Ag electrode exceeds the predetermined value, the surface is partially removed to decrease the Sn++content to the predetermined value or less to suppress the occurrence of yellowing of the glass substrate.
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Adachi Daisuke
Sumida Keisuke
Tsuji Hiroyasu
Griffin Steven P.
Lazorcik Jason L.
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
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