Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6346145 | Paints containing low sheen opacifying pigments obtained by flux calcination of kaolin clay | John Hen, Ray Young, Sharad Mathur | 2002-02-12 |
| 6136086 | Low sheen opacifying pigments and manufacture thereof by calcination of kaolin clay | John Hen, Ray Young, Sharad Mathur | 2000-10-24 |