Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684580 | Hydrocarbon analysis and control by raman spectroscopy | Philip E. Flecher, William T. Welch | 1997-11-04 |
| 5596196 | Oxygenate analysis and control by Raman spectroscopy | Kent L. Wise, William T. Welch, Michael B. Sumner | 1997-01-21 |