Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7687445 | Lower ash lubricating oil with low cold cranking simulator viscosity | John M. Rosenbaum | 2010-03-30 |
| 7473346 | Method for using medium-speed diesel engine oil | John M. Rosenbaum | 2009-01-06 |
| 7435328 | Process for making medium-speed diesel engine oil | John M. Rosenbaum | 2008-10-14 |
| 7374658 | Medium speed diesel engine oil | John M. Rosenbaum | 2008-05-20 |
| 5370805 | Chlorine-free diesel engine lubricating composition | Wesley A. Middleton | 1994-12-06 |