Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422928 | Silica flotation collectors derived from isononyl alcohol | Barry M. O'Brien | 1983-12-27 |
| 4319987 | Branched alkyl ether amines as iron ore flotation aids | Donald Shaw, Barry M. O'Brien, John W. Keck, Wilfred L. Freyberger | 1982-03-16 |