Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4384951 | Demulsification of bitumen emulsions using polyureas | David R. McCoy | 1983-05-24 |
| 4382852 | Demulsification of bitumen emulsions using cationic polymers | David R. McCoy | 1983-05-10 |
| 4321146 | Demulsification of bitumen emulsions with a high molecular weight mixed alkylene oxide polyol | David R. McCoy, Robert M. Gipson | 1982-03-23 |
| 4321148 | Demulsification of bitumen emulsions | David R. McCoy, Robert M. Gipson, Colin L. LaBerge | 1982-03-23 |