Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8394873 | Polysiloxane modified titanium dioxide | Robert J. Kostelnik, Christopher J. Drury | 2013-03-12 |
| 8088853 | Polysiloxane modified titanium dioxide | Robert J. Kostelnik, Christopher J. Drury | 2012-01-03 |
| 6646037 | Pigments treated with organosulfonic compounds | Modasser El-Shoubary, Robert J. Kostelnik | 2003-11-11 |
| 6214106 | Silane treated inorganic pigments | Leon Weber, Robert J. Kostelnik | 2001-04-10 |
| 5653794 | Silane treated inorganic pigments | Leon Weber, Robert J. Kostelnik | 1997-08-05 |