Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627565 | Crystallized glass substrate for information recording medium | Katsuaki Uchida | 2003-09-30 |
| 6627566 | Substrate for information recording medium and magnetic recording medium composed of crystallized glass | — | 2003-09-30 |
| 6599606 | Process for preparation of crystallized glass for information recording disk | — | 2003-07-29 |
| 6569792 | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate | Kouji Azegami | 2003-05-27 |