Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585850 | Retaining ring with a three-layer structure | Gen Yasuhara, Yoshihiro Sunada | 2003-07-01 |
| 6386963 | Conditioning disk for conditioning a polishing pad | Raijiro Koga | 2002-05-14 |
| 4973363 | Aluminum alloy and method for making same | Ikeda Hayato, Sekiguchi Tunehisa, Yokoi Katsumi | 1990-11-27 |