Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5951755 | Manufacturing method of semiconductor substrate and inspection method therefor | Moriya Miyashita, Tadahide Hoshi, Masanori Numano, Shuichi Samata, Akiko Sekihara +1 more | 1999-09-14 |
| 5945703 | Semiconductor memory device and manufacturing method therefor | Kazuyoshi Furukawa, Koichi Kishi | 1999-08-31 |
| 5213993 | Method of manufacturing semiconductor substrate dielectric isolating structure | Tsutomu Amai, Takanobu Kamakura | 1993-05-25 |
| 5188987 | Method of manufacturing a semiconductor device using a polishing step prior to a selective vapor growth step | — | 1993-02-23 |
| 5132770 | Semiconductor device having improved multi-layered substrate structure | — | 1992-07-21 |
| 5096839 | Silicon wafer with defined interstitial oxygen concentration | Tsutomu Amai | 1992-03-17 |
| 5023696 | Semiconductor device having composite substrate formed by fixing two semiconductor substrates in close contact with each other | — | 1991-06-11 |
| 4990459 | Impurity measuring method | Ayako Maeda, Mokuji Kageyama, Shintaro Yoshii | 1991-02-05 |
| 4958373 | Defect-recognition processing apparatus | Toshiro Usami, Hiroyuki Kamijo, Takao Ohta | 1990-09-18 |
| 4894206 | Crystal pulling apparatus | Youji Yamashita, Masakatu Kojima, Yoshiaki Matsushita | 1990-01-16 |
| 4721991 | Refractory silicide conductor containing iron | Reiji Ohtaki, Yuuichi Mikata | 1988-01-26 |