Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Reexamination Certificate
2008-01-01
2008-01-01
Lopez, Carlos (Department: 1731)
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
C065S127000, C065S275000
Reexamination Certificate
active
10725446
ABSTRACT:
A method of manufacturing a glass substrate for a storage medium by pressing a glass material between an upper and a lower dies. The method includes a heating step of heating the glass material arranged between the upper and lower dies, a pressing step of pressing the heated glass material via the upper and lower dies, and a cooling step of having, after the pressing step, a cooling member contact the upper and lower dies to cool them together with the molded glass material arranged between the upper and lower dies. During the heating step and the pressing step, a vacuum atmosphere is maintained in a space containing the dies and the glass material. When the pressing step has completed, an inert gas is filled in the space to set a pressure in the space equal to an ambient pressure.
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Austrian Search and Examination Report dated Sep. 22, 2006, issued in Singaporean Patent Application No. 200307141-2.
Hibino Kunio
Kainuma Kengo
Kawata Tatsumi
Tokunaga Tomokazu
Fuji Electric Device Technology Co., Ltd
Lopez Carlos
Matsushita Electric Industrial Co. Ltd
Sartori Michael A.
Venable LLP
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