Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6884721 | Silicon wafer storage water and silicon wafer storage method | — | 2005-04-26 |
| 6582280 | Sandblasting agent, wafer treated with the same, and method of treatment with the same | Toshiaki Otaka | 2003-06-24 |
| 6306021 | Polishing pad, polishing method, and polishing machine for mirror-polishing semiconductor wafers | Hisashi Masumura, Makoto Kobayashi, Tsutomu Takaku, Mamoru Okada | 2001-10-23 |
| 6120353 | Polishing method for semiconductor wafer and polishing pad used therein | Kiyoshi Suzuki, Hisashi Masumura | 2000-09-19 |
| 6060396 | Polishing agent used for polishing semiconductor silicon wafers and polishing method using the same | Tsutomu Takaku | 2000-05-09 |
| 5891353 | Polishing agent used for polishing semiconductor wafers and polishing method using the same | Hisashi Masumura, Kiyoshi Suzuki, Hideo Kudo | 1999-04-06 |
| 5866226 | Polishing agent used for polishing semiconductor wafers and polishing method using the same | Hisashi Masumura, Kiyoshi Suzuki, Hideo Kudo | 1999-02-02 |
| 5821167 | Method of manufacturing semiconductor mirror wafers | Hisashi Masumura, Kiyoshi Suzuki, Hideo Kudo | 1998-10-13 |
| 5792258 | High-frequency induction heater and method of producing semiconductor single crystal using the same | Masanori Kimura, Ken Yoshizawa, Hirotoshi Yamagishi | 1998-08-11 |