Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6645603 | Laser processing method to a glass substrate and an optical diffraction element obtained thereby, and a method for manufacturing optical elements | Keiji Tsunetomo | 2003-11-11 |
| 6616727 | Porous metal powder | Yoshiro Arami, Masato Kikukawa, Osamu Iwatsu, Yasuhiko Hashimoto | 2003-09-09 |
| 6590722 | Optical element | Hiroaki Yamamoto, Koichiro Nakamura, Jun Yamaguchi | 2003-07-08 |