Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543338 | Method for manufacturing a semiconductor device using a semiconductor-on-insulator substrate | — | 1996-08-06 |
| 5502668 | Semiconductor memory device capable of low-voltage programming | Hidemi Takasu | 1996-03-26 |
| 5463579 | Semiconductor memory device with floating gate and method for driving the same | — | 1995-10-31 |
| 5429965 | Method for manufacturing a semiconductor memory | — | 1995-07-04 |
| 5420458 | Semiconductor device and method of manufacture thereof | — | 1995-05-30 |
| 5408430 | Method for operating nonvolatile memory semiconductor devices memories | — | 1995-04-18 |
| 5402374 | Non-volatile semiconductor memory device and memory circuit using the same | Masataka Tsuruta, Hironobu Nakao, Takanori Ozawa | 1995-03-28 |
| 5396458 | Semiconductor memory device and method of writing and reading out information for the same | — | 1995-03-07 |
| 5357134 | Nonvolatile semiconductor device having charge trap film containing silicon crystal grains | — | 1994-10-18 |
| 5349221 | Semiconductor memory device and method of reading out information for the same | — | 1994-09-20 |
| 5349222 | Single gate MOS type nonvolatile memory and operating method thereof | — | 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 |
| 5233219 | Three-dimensional semiconductor device structure | Hidemi Takasu | 1993-08-03 |