Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764392 | Wafer polishing method and wafer polishing device | Takashi Nihonmatsu, Tadao Tanaka | 2004-07-20 |
| 6713429 | Purification catalyst for internal combustion engine exhaust gas | Masakazu Tanaka, Yosiyasu Andou, Keiji Ito | 2004-03-30 |