Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5945572 | Method for producing aryl alkyl hydroperoxides | Terunori Fujita, Toshihiro Takai, Hideto Matsuoka, Akifumi Kagayama, Hiroshi Kuroda +3 more | 1999-08-31 |
| 5847227 | Method for producing aryl alkyl hydroperoxides | Terunori Fujita, Toshihiro Takai, Hideto Matsuoka, Akifumi Kagayama, Hiroshi Kuroda +3 more | 1998-12-08 |
| 4696877 | Photo-mask blank comprising a shading layer having a variable etch rate | Kenichi Kagaya, Masao Ushida, Kouichi Maruyama | 1987-09-29 |
| 4657648 | Method of manufacturing a mask blank including a modified chromium compound | Osamu Nagarekawa | 1987-04-14 |
| 4563407 | Photo-mask blank comprising a shading layer having a variable etch rate | Kenichi Kagaya, Masao Ushida, Kouichi Maruyama | 1986-01-07 |
| 4530891 | Photo-mask blank for use in lithography including a modified chromium compound | Osamu Nagarekawa | 1985-07-23 |