Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9589974 | Nonvolatile semiconductor memory device and method for manufacturing same | Jun Iijima, Takamasa Usui | 2017-03-07 |
| 8592978 | Method of fabricating semiconductor device and the semiconductor device | Koichi Matsuno | 2013-11-26 |
| 7582928 | Nonvolatile semiconductor memory device and its manufacturing method | Tadashi Iguchi, Hiroaki Tsunoda | 2009-09-01 |
| 7488646 | Nonvolatile semiconductor memory device and its manufacturing method | Tadashi Iguchi, Hiroaki Tsunoda | 2009-02-10 |
| 7382015 | Semiconductor device including an element isolation portion having a recess | Tadashi Iguchi, Hiroaki Tsunoda | 2008-06-03 |
| 7166889 | Semiconductor memory device having a gate electrode and a method of manufacturing thereof | Hiroaki Tsunoda, Hideyuki Kobayashi, Katsuyasu Shiba, Jota Fukuhara | 2007-01-23 |
| 6987047 | Method of manufacturing a nonvolatile semiconductor memory device having a stacked gate structure | Tadashi Iguchi, Hiroaki Tsunoda | 2006-01-17 |
| 6974746 | Method of manufacturing a nonvolatile semiconductor memory device having a stacked gate structure | Tadashi Iguchi, Hiroaki Tsunoda | 2005-12-13 |
| 6953962 | Nonvolatile memory device having a gate electrode | Hiroaki Tsunoda | 2005-10-11 |
| 6869845 | Semiconductor memory device having a memory region and a peripheral region, and a manufacturing method thereof | Hiroaki Tsunoda | 2005-03-22 |
| 6770932 | Semiconductor memory device having a memory region and a peripheral region, and a manufacturing method thereof | Hiroaki Tsunoda | 2004-08-03 |
| 6720610 | Nonvolatile semiconductor memory device and its manufacturing method | Tadashi Iguchi, Hiroaki Tsunoda | 2004-04-13 |
| 4778264 | Refraction-type projection lens | Takeshi Matsumura | 1988-10-18 |
| 4634238 | Projection lens | Takeshi Matumura | 1987-01-06 |
| 4581200 | Method and apparatus for removing hydrogen from secondary cooling systems of fast breeder reactors | — | 1986-04-08 |