Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8313657 | Method and system for removal of ammonia from wastewater by electrolysis | Rick B. Spielman | 2012-11-20 |
| 7857547 | Drain panels and blocks | Orwill Hawkins | 2010-12-28 |
| 7736776 | Method and system for removal of ammonia from wastewater by electrolysis | Rick B. Spielman | 2010-06-15 |
| 7371323 | System and method for reducing wastewater contaminants | Rick B. Spielman | 2008-05-13 |