Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7955763 | Mask blank glass substrate manufacturing method, mask blank manufacturing method, mask manufacturing method, mask blank glass substrate, mask blank, and mask | Hisashi Kasahara, Yasushi Okubo | 2011-06-07 |
| 7851108 | Mask blank glass substrate manufacturing method, mask blank manufacturing method, mask manufacturing method, mask blank glass substrate, mask blank, and mask | Hisashi Kasahara, Yasushi Okubo | 2010-12-14 |
| 7838182 | Container for housing a mask blank, method of housing a mask blank, and mask blank package | — | 2010-11-23 |
| 7463338 | Container for housing a mask blank, method of housing a mask blank, and mask blank package | — | 2008-12-09 |
| 6317480 | Method of manufacturing X-ray mask and X-ray mask blank, and X-ray mask and X-ray mask blank manufactured thereby | Tsutomu Shoki, Takamitsu Kawahara, Ryo Ohkubo | 2001-11-13 |
| 5447746 | Zone texturing method for a magnetic recording disk | Rohit Ishizaki, Rohit Narendra | 1995-09-05 |
| 5087482 | Method of manufacturing magnetic recording medium capable of recording information at a high recording density | Hisao Kawai, Hisanori Suzuki | 1992-02-11 |
| 5029317 | Magnetic recording medium capable of recording information at a high recording density | Hisao Kawai, Hisanori Suzuki | 1991-07-02 |