Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6197682 | Structure of a contact hole in a semiconductor device and method of manufacturing the same | Kuniaki Koyama | 2001-03-06 |
| 6096632 | Fabrication method of semiconductor device using CMP process | — | 2000-08-01 |
| 6054771 | Interconnection system in a semiconductor device | — | 2000-04-25 |
| 6020642 | Interconnection system in a semiconductor device | — | 2000-02-01 |
| 6001734 | Formation method of contact/ through hole | — | 1999-12-14 |
| 5953609 | Method of manufacturing a semiconductor memory device | Kuniaki Koyama | 1999-09-14 |
| 5939746 | Semiconductor memory device and manufacturing method of the same | Kuniaki Koyama | 1999-08-17 |
| 5929524 | Semiconductor device having ring-shaped conductive spacer which connects wiring layers | Kuniaki Koyama | 1999-07-27 |