Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11054735 | Mask blank, phase shift mask, method for manufacturing phase shift mask, and method for manufacturing semiconductor device | Ryo Ohkubo, Hiroaki Shishido, Osamu Nozawa | 2021-07-06 |
| 10942441 | Mask blank, phase shift mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido | 2021-03-09 |
| 10935881 | Mask blank, phase shift mask, phase shift mask manufacturing method, and semiconductor device manufacturing method | Hiroaki Shishido, Osamu Nozawa | 2021-03-02 |
| 10606164 | Mask blank, phase shift mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido | 2020-03-31 |
| 10551734 | Mask blank, phase shift mask, method for manufacturing phase shift mask, and method for manufacturing semiconductor device | Hiroaki Shishido, Osamu Nozawa | 2020-02-04 |
| 10481486 | Mask blank, phase shift mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido | 2019-11-19 |
| 10481485 | Mask blank, transfer mask, method of manufacturing transfer mask and method of manufacturing semiconductor device | Osamu Nozawa, Ryo Ohkubo | 2019-11-19 |
| 10146123 | Mask blank, phase shift mask, method for manufacturing phase shift mask, and method for manufacturing semiconductor device | Hiroaki Shishido, Osamu Nozawa | 2018-12-04 |
| 10114281 | Mask blank, phase shift mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido | 2018-10-30 |
| 10083715 | Method of manufacturing a perpendicular magnetic disc | Kazuaki Sakamoto | 2018-09-25 |
| 9240204 | Perpendicular magnetic recording disc | Teiichiro Umezawa, Tokichiro Sato | 2016-01-19 |
| 9142241 | Perpendicular magnetic recording medium and method of manufacturing the same | Takahiro Onoue, Tokichiro Sato | 2015-09-22 |
| 8877359 | Magnetic disk and method for manufacturing same | Chiyo Saito, Tokichiro Sato | 2014-11-04 |
| 8865327 | Perpendicular magnetic disc | Tokichiro Sato | 2014-10-21 |
| 8828566 | Perpendicular magnetic recording disc | Tokichiro Sato | 2014-09-09 |
| 8453315 | Method of producing a perpendicular magnetic disc | Tokichiro Sato | 2013-06-04 |
| 8431258 | Perpendicular magnetic recording medium and method of manufacturing the same | Takahiro Onoue, Tokichiro Sato | 2013-04-30 |
| 8404370 | Perpendicular magnetic recording medium and method of manufacturing the same | Tokichiro Sato, Takahiro Onoue | 2013-03-26 |