Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061579 | Friction stir method for forming structures and materials | Zhili Feng, Stan A. David | 2011-11-22 |
| 7762447 | Multiple pass and multiple layer friction stir welding and material enhancement processes | Zhili Feng, Stan A. David | 2010-07-27 |