Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403998 | Process for preparing coal suspensions | Johann G. D. Schulz | 1983-09-13 |
| 4339346 | Bituminous emulsions | Johann G. D. Schulz | 1982-07-13 |
| 4332695 | Hydrocarbon emulsions | Johann G. D. Schulz | 1982-06-01 |
| 4305728 | Coal suspensions and process for preparing same | Johann G. D. Schulz | 1981-12-15 |
| 4272253 | Stable coal-in-oil suspensions and process for preparing same | Johann G. D. Schulz | 1981-06-09 |
| 4261701 | Uniform coal suspensions and process for preparing same | Johann G. D. Schulz | 1981-04-14 |