Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7064375 | Semiconductor memory device having a gate electrode and a diffusion layer and a manufacturing method thereof | Keisuke Yonehama, Eiji Sakagami, Hiromasa Fujimoto | 2006-06-20 |
| 6828627 | Semiconductor device | Akira Goda, Kazuhiro Shimizu, Riichiro Shirota, Norihisa Arai, Seiichi Aritome +3 more | 2004-12-07 |
| 6828648 | Semiconductor device and method of manufacturing the same | Riichiro Shirota, Hirohisa Iizuka | 2004-12-07 |
| 6703669 | Semiconductor device having serially connected memory cell transistors provided between two current terminals | Akira Goda, Kazuhiro Shimizu, Riichiro Shirota, Norihisa Arai, Seiichi Aritome +3 more | 2004-03-09 |
| 6639296 | Semiconductor device and method of manufacturing the same | Riichiro Shirota, Hirohisa Iizuka | 2003-10-28 |
| 6462373 | Nonvolatile semiconductor memory device having tapered portion on side wall of charge accumulation layer | Kazuhiro Shimizu, Riichiro Shirota, Seiichi Aritome, Hiroaki Tsunoda, Tadashi Iguchi +3 more | 2002-10-08 |
| 6413809 | Method of manufacturing a non-volatile memory having an element isolation insulation film embedded in the trench | Takuya Nakamura, Hirohisa Iizuka, Kazuhito Narita, Seiichi Aritome, Fumitaka Arai | 2002-07-02 |
| 6274434 | Method of making memory cell with shallow trench isolation | Riichiro Shirota, Hirohisa Iizuka | 2001-08-14 |
| 6222225 | Semiconductor device and manufacturing method thereof | Takuya Nakamura, Hirohisa Iizuka, Kazuhito Narita, Seiichi Aritome, Fumitaka Arai | 2001-04-24 |