Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7875458 | Application of test for residual wax contamination in basestocks to correlate with the low temperature viscometric properties of fully formulated oils | James W. Gleeson, Lisa I-Ching Yeh, Charles L. Baker, Jr., Christine A. Zielinski | 2011-01-25 | $132,905,000 |
| 5632867 | Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery | Michael B. Davis, John J. Dugan, Adrianus Welmers | 1997-05-27 | $121,463,000 |
| 5167773 | Distillation tower and sidestream stripper therefor | Adrianus Welmers | 1992-12-01 | $46,424,000 |
| 5152889 | Drip pipe for application of wash liquid to filter surfaces | Rudolph R. Savory | 1992-10-06 | $39,434,000 |