Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11028333 | Lubricating oil additives | Elin J. Eis | 2021-06-08 |
| 10577555 | Lubricating oil additives | Elin J. Eis | 2020-03-03 |
| 9023775 | Lubricating oil composition | Richard D. Bertram, Peter D. Watts | 2015-05-05 |
| 8703676 | Marine engine lubrication | Richard D. Bertram, Joseph P. Hartley, Peter D. Watts | 2014-04-22 |
| 8404627 | Detergent comprising C10 to C40 hydrocarbyl substituted hydroxybenzoates for reducing asphaltene precipitation | Richard D. Bertram, Peter D. Watts | 2013-03-26 |
| 8399392 | Method of reducing asphaltene precipitation in an engine utilizing a C22 hydrocarbyl salicylate | Richard D. Bertram, Peter D. Watts | 2013-03-19 |
| 8105991 | Overbased metal sulphonate detergent | Christopher Adams | 2012-01-31 |
| 8012918 | Detergent | Richard D. Bertram, Peter D. Watts | 2011-09-06 |
| 7935664 | Lubricating oil composition | Christopher Adams | 2011-05-03 |
| 7691796 | Method of improving the compatibility of an overbased detergent with other additives in a lubricating oil composition | Christopher Adams | 2010-04-06 |
| 6390080 | Intake manifold with a heated PCV passage | Darrell Charles Drouillard | 2002-05-21 |
| 6196187 | Idle air bypass valve silencer | Michael W. Zubeck, Greg Thompson, Michael V. Hofman | 2001-03-06 |