Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7279632 | Multi-element polycrystal for solar cells and method of manufacturing the same | Kazuo Nakajima, Noritaka Usami, Wugen Pan | 2007-10-09 |
| 4356871 | Hydraulic control system for a rock drill | — | 1982-11-02 |