Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9566587 | Methods of and systems for treating incinerated waste | Douglas Dale Warkentin | 2017-02-14 |
| 7389975 | Methods and apparatus for fencing and other structures | David Kurth | 2008-06-24 |
| 7032891 | Methods and apparatus for fencing and other structures | David Kurth | 2006-04-25 |
| 5587079 | Process for treating solutions containing sulfate and metal ions. | Douglas Dale Warkentin, Beverly M. Piroshco | 1996-12-24 |