Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997626 | Low abrasion calcined kaolin pigments and enhanced filtration method | Joseph H. Z. Wu, Michael G. Londo, Mitchell J. Willis, Rene S. Guermonprez | 1999-12-07 |
| 5039431 | Melt-blown nonwoven wiper | Malcolm L. Johnson, Mark D. Strickland | 1991-08-13 |
| 4904521 | Melt-blown nonwoven wiper | Malcolm L. Johnson, Mark D. Strickland | 1990-02-27 |