Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693970 | Dynamic random access memory device comprising memory cells having capacitor formed above cell transistor and peripheral circuit for improving shape and aspect ratio of contact hole in the peripheral circuit and producing method thereof | — | 1997-12-02 |
| 5637522 | Method for producing a dynamic random access memory device which includes memory cells having capacitor formed above cell transistor and peripheral circuit for improving shape and aspect ratio of contact hole in the peripheral circuit | — | 1997-06-10 |
| 5580812 | Semiconductor device have a belt cover film | Yoshiki Hasegawa, Yasuhiko Konno | 1996-12-03 |
| 5502332 | Semiconductor device having a belt cover film | Yoshiki Hasegawa, Yasuhiko Konno | 1996-03-26 |
| 5234853 | Method of producing a high voltage MOS transistor | — | 1993-08-10 |
| 5140392 | High voltage MOS transistor and production method thereof, and semiconductor device having high voltage MOS transistor and production method thereof | — | 1992-08-18 |