Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5411587 | Paper coating kaolin pigments their preparation and use | Mitchell J. Willis, Fred M. Allen, Jordan Keith Lampert | 1995-05-02 |
| 5169443 | Paper coating kaolin pigments there preparation and use | Mitchell J. Willis | 1992-12-08 |