Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7087343 | High melt integrity battery separator for lithium ion batteries | Lie Shi, Ta-Hua Yu | 2006-08-08 |
| 6602593 | Battery separators with reduced splitting propensity | Robert W. Callahan, Ron W. Call, Ta-Hua Yu | 2003-08-05 |