Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6921608 | Battery separator | Ronald W. Call, Shizuo Ogura, Donald K. Simmons, Xiangyun Wei | 2005-07-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6921608 | Battery separator | Ronald W. Call, Shizuo Ogura, Donald K. Simmons, Xiangyun Wei | 2005-07-26 |