Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9750990 | Golf club head and low density alloy thereof | Chuan-Hsien Chang, Chih-Yeh Chao | 2017-09-05 |
| 8287403 | Iron-based alloy for a golf club head | Chih-Yeh Chao, Chuan-Hsien Chang | 2012-10-16 |