Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8080330 | Composite battery separator film and method of making same | Keith D. Kepler | 2011-12-20 |
| 7989103 | Composite battery separator film and method of making same | Keith D. Kepler | 2011-08-02 |