Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6101641 | Waste removal method for dry toilets | Robert D. Hawkins | 2000-08-15 |
| 6058520 | Liner mechanism for dry toilets | Robert D. Hawkins | 2000-05-09 |
| 5991931 | Waste system for toilets | Robert D. Hawkins | 1999-11-30 |
| 5960487 | Dry toilet | Robert D. Hawkins | 1999-10-05 |
| 4846788 | Combatting internal parasites in warm blooded animals | James R. Heitz | 1989-07-11 |
| 4846789 | Combatting internal parasites in warm blooded animals | James R. Heitz | 1989-07-11 |
| 4411939 | Conformable reinforcement board | Robert D. Hawkins | 1983-10-25 |