Abrading – Abrading process – With critical nonabrading work treating
Reexamination Certificate
2011-04-26
2011-04-26
Hail, III, Joseph J (Department: 3723)
Abrading
Abrading process
With critical nonabrading work treating
C451S041000, C451S059000
Reexamination Certificate
active
07931523
ABSTRACT:
A method for manufacturing a glass substrate for an information recording medium having a high level of cleanness and superior smoothness. The manufacturing method includes washing a disk-shaped glass plate with an acid washing liquid, removing at least part of a surface layer, which is formed on the surface of the glass plate, by performing grinding with diamond abrasion grains, and washing the surface with a neutral or alkaline washing liquid.
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U.S. Appl. No. 10/532,538, filed Apr. 22, 2004 entitled, “Glass Substrate for Information Recording Medium and Method for Manufacturing Same.” (Related).
U.S. Appl. No. 10/532,550, filed Apr. 22, 2005 entitled, “Glass Substrate for Information Recording Medium and Method for Manufacturing the Same.” (Related).
Hashimoto Toshiaki
Kudoh Yuriko
Saito Yasuhiro
Grant Alvin J.
Hail, III Joseph J
Hoya Corporation
Workman Nydegger
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