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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Chinnakaruppan; Palaniappan
Address:
Springboro, OH
No. of patents:
3
Patents:












Patent Number Title Of Patent Date Issued
8197303 Sapphire substrates and methods of making same June 12, 2012
A sapphire substrate includes a generally planar surface having a crystallographic orientation selected from the group consisting of a-plane, r-plane, m-plane, and c-plane orientations, and having a nTTV of not greater than about 0.037 .mu.m/cm.sup.2, wherein nTTV is total thickness
7956356 Sapphire substrates and methods of making same June 7, 2011
A sapphire substrate includes a generally planar surface having a crystallographic orientation selected from the group consisting of a-plane, r-plane, m-plane, and c-plane orientations, and having a nTTV of not greater than about 0.037 .mu.m/cm.sup.2, wherein nTTV is total thickness
7919815 Spinel wafers and methods of preparation April 5, 2011
Wafer suitable for semiconductor deposition application can be fabricated to have low bow, warp, total thickness variation, taper, and total indicated reading properties. The wafers can be fabricated by cutting a boule to produce rough-cut wafers, lapping the rough-cut wafers, etching










 
 
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