Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6061641 | Method for improving instrument response | David Worthington Hahn, Kenneth R. Hencken, Howard A. Johnsen | 2000-05-09 |
| 5953120 | Optical probe | Kenneth R. Hencken | 1999-09-14 |
| 5777734 | Method and apparatus for calibrating a particle emissions monitor | Ronald F. Renzi | 1998-07-07 |