Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209839 | Method of removing hydroperoxides from lubricating oils using sodium hydroxide and a metal thiophosphate | Harold Shaub, Darrell W. Brownawell | 1993-05-11 |
| 5112482 | Filter for removing hydroperoxides from lubricating oils | Harold Shaub, Darrell W. Brownawell | 1992-05-12 |
| 4997546 | Method of removing hydroperoxides from lubricating oils | Harold Shaub, Darrell W. Brownawell | 1991-03-05 |