Issued Patents 1994
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357134 | Nonvolatile semiconductor device having charge trap film containing silicon crystal grains | — | 1994-10-18 |
| 5349222 | Single gate MOS type nonvolatile memory and operating method thereof | — | 1994-09-20 |
| 5349221 | Semiconductor memory device and method of reading out information for the same | — | 1994-09-20 |
| 5342803 | Method for isolating circuit elements for semiconductor device | — | 1994-08-30 |
| 5343423 | FET memory device | — | 1994-08-30 |
| 5341010 | Semiconductor device including nonvolatile memories | — | 1994-08-23 |
| 5338954 | Semiconductor memory device having an insulating film and a trap film joined in a channel region | — | 1994-08-16 |
| 5332915 | Semiconductor memory apparatus | Takanori Ozawa, Hironobu Nakao | 1994-07-26 |
| 5331190 | Semiconductor device including nonvolatile memories | Hironobu Nakao | 1994-07-19 |
| 5319229 | Semiconductor nonvolatile memory with wide memory window and long data retention time | Takanori Ozawa, Hironobu Nakao | 1994-06-07 |
| 5286994 | Semiconductor memory trap film assembly having plural laminated gate insulating films | Takanori Ozawa | 1994-02-15 |
| 5278440 | Semiconductor memory device with improved tunneling characteristics | — | 1994-01-11 |