Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36936 | Production of high-purity polycrystalline silicon rod for semiconductor applications | David W. Keck, Kenichi Nagai, Yoshifumi Yatsurugi, Hiroshi Morihara, Renzin Paljor Yuthok | 2000-10-31 |
| 5545387 | Production of high-purity polycrystalline silicon rod for semiconductor applications | David W. Keck, Kenichi Nagai, Yoshifumi Yatsurugi, Hiroshi Morihara | 1996-08-13 |
| 5478396 | Production of high-purity polycrystalline silicon rod for semiconductor applications | David W. Keck, Kenichi Nagai, Yoshifumi Yatsurugi, Hiroshi Morihara | 1995-12-26 |
| 5382419 | Production of high-purity polycrystalline silicon rod for semiconductor applications | Kenichi Nagai, Yosifumi Yatsurugi, Hiroshi Morihara | 1995-01-17 |