Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6865511 | Process and device for evaluating the performance of a process control system | Donald K. Frerichs | 2005-03-08 |
| 6799143 | Process and device for evaluating the performance of a process control system | Donald K. Frerichs | 2004-09-28 |