Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6004820 | Method of using a water testing capsule using water soluble film membranes | — | 1999-12-21 |
| 5932174 | Device for chloride ion removal prior to chemical oxygen demand analysis | Donald G. Miller | 1999-08-03 |
| 5756049 | Water testing capsule using water soluble film membranes | — | 1998-05-26 |
| 5683914 | Method for chloride ion removal prior to chemical oxygen demand analysis | Donald G. Miller | 1997-11-04 |
| 5667754 | Device for chloride ion removal prior to chemical oxygen demand analysis | Donald G. Miller | 1997-09-16 |
| D325881 | Color comparator | Richard D. Vanvalin, Timothy J. Gaul | 1992-05-05 |