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Inventor: Nakajima; Kousuke
Address: Sagamihara, JP
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553768 |
Substrate and a method for polishing a substrate |
June 30, 2009 |
| A substrate having flatness of less than 230 nmPV and surface roughness at RMS of less than 0.20 nm. is obtained by a method comprising: a process of polishing an object to be polished with a polishing pad comprising at least one layer having compressibility of 5% or below in a base laye |
| 6819526 |
Holding member for information storage disk and information storage disk drive device |
November 16, 2004 |
| An information storage disk holding member for holding an information storage disk in position in an information storage disk drive device, the holding member being made of glass-ceramics in which a crystal phase is dispersed in a glass matrix. The holding member has specific rigidity |
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