Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693231 | Aromatic/aliphatic nylon polymer microporous membranes | James S. Johnson, Michael J. Witham | 1997-12-02 |
| 5215662 | Heat resistant microporous material production and products | James S. Johnson | 1993-06-01 |