Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9630867 | Treatment of spent caustic waste | Chad L. Felch, Bruce L. Brandenburg, Richard W. Lehmann | 2017-04-25 |
| 9580335 | Water treatment apparatus incorporating walnut shell filter media and a draft tube system | Chad L. Felch, Michael Howdeshell, Stuart J. Munson, Eric A. Lorge, Matthew Patterson | 2017-02-28 |