Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4580901 | Fluid sample cell | — | 1986-04-08 |
| 4566791 | Fluid sample cell comprising Fresnel sectors | — | 1986-01-28 |
| 4487504 | Reflectance measuring instrument with integrating sphere | — | 1984-12-11 |
| 4365200 | Self alarming four double electrodes conductivity cell | — | 1982-12-21 |
| 4362994 | Self alarming five single electrodes conductivity cell | Richard M. Stilwell | 1982-12-07 |