Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665694 | Block detergent containing nitrilotriacetic acid | Thomas W. Backes, Sean D. Dingman | 1997-09-09 |
| 5490949 | Block detergent containing nitrilotriacetic acid | Thomas W. Backes, Sean D. Dingman | 1996-02-13 |
| 5425895 | Block detergent containing nitrilotriacetic acid | Thomas W. Backes, Sean D. Dingman | 1995-06-20 |
| 5419850 | Block detergent containing nitrilotriacetic acid | Thomas W. Backes, Sean D. Dingman | 1995-05-30 |