Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7638063 | Methods for replenishing a charge of oxidizing gas within an oxidation tank | Edward T. Maas, Jr., Kevin A. Hellenbrand, William M. Kavey, Daniel A. Klein | 2009-12-29 |
| 7491321 | Oxidation tank control valve assembly and systems and methods for replenishing a charge of oxygen-containing gas within an oxidation tank | Edward T. Maas, Jr., Kevin A. Hellenbrand, William M. Kavey, Daniel A. Klein | 2009-02-17 |