Powder for disks

Details Powder for disks Powder for disks

2007-04-10

2007-04-10

Wilson, Lee D. (Department: 3723)

Abrading

Abrading process

Glass or stone abrading

C451S044000, C428S043000, C428S167000, C029S424000

Reexamination Certificate

active

09840077

ABSTRACT:
A plurality of disks include a first disk and a second disk stacked upon the first disk. The first disk and the second disk are each formed from glass or glass-ceramic. A powder is disposed between the first disk and the second disk. The powder is selected from the group including calcium carbonate, calcium magnesium carbonate, calcium phosphate, magnesium carbonate, magnesium borate, magnesium oxide, magnesium phosphate, and clay.

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