Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6887389 | Method and apparatus for recycling sewage sludge utilizing spent water-softener lime | — | 2005-05-03 | |
| 5392721 | Method for recycling papermaking sludge | — | 1995-02-28 | |
| 5054406 | Water retardant covering material for solid waste landfills | — | 1991-10-08 | $102,000 |
| 5018459 | Method and apparatus for recycling paper pulp sludge | — | 1991-05-28 | $154,000 |