Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231272 | Construction block for making various structures | — | 2001-05-15 |
| 6189721 | Spill containment apron | — | 2001-02-20 |
| 5975332 | Compact spill containment pan | — | 1999-11-02 |
| 5775869 | Transportable spill containment pan | — | 1998-07-07 |
| 5435458 | Chemical spill containment apparatus | — | 1995-07-25 |