Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664032 | Method of producing two-dimensional phase type optical element | — | 2003-12-16 |
| 6641985 | Method for making element | Yasuyuki Unno | 2003-11-04 |
| 6638368 | Non-oriented electrical steel sheet and method for producing the same | Hiroyoshi Yashiki, Mitsuyo Maeda, Taisei Nakayama, Noriyuki Honjou, Shinsuke Mita | 2003-10-28 |
| 6569608 | Method of manufacturing an element with multiple-level surface | Eiichi Murakami | 2003-05-27 |