Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851048 | Structured kaolin pigment and process for manufacture thereof | J. Philip E. Jones, Keryn N. Geho, Weyman H. Dunaway, Rasik H. Raythatha | 1989-07-25 |
| 4798630 | Process for surface treating clay minerals and reactive intermediates produced by said process | Weyman H. Dunaway | 1989-01-17 |