Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5707416 | Method of recovering byproduct heat during composting | — | 1998-01-13 |
| 5518922 | Accelerated composting plate and system for use | — | 1996-05-21 |
| 4885880 | Corrosion inhibiting secondary barrier system for underground storage tanks | Klaus F. Grunau | 1989-12-12 |
| 4743414 | Composite wall forming process | — | 1988-05-10 |
| 4619032 | Method of forming a composite wall for a building structure | — | 1986-10-28 |
| 4554124 | Horizontally poured Fibrestone building construction | — | 1985-11-19 |