Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688701 | Method of making semiconductor device having a plurality of impurity layers | Maiko Kobayashi | 1997-11-18 |
| 5683923 | Semiconductor memory device capable of electrically erasing and writing information and a manufacturing method of the same | Masahiro Shimizu, Masayoshi Shirahata, Takehisa Yamaguchi | 1997-11-04 |
| 5616401 | Oxynitride film and its formation method, and method for forming an element isolation oxide film using the oxynitride film | Maiko Kobayashi | 1997-04-01 |