Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533838 | High purity gallium for preparation of compound semiconductor, and method and apparatus for purifying the same | Takeharu Yamamura, Hidekazu Kato, Takashi Ohgami, Kishio Tayama | 2003-03-18 |