Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6136376 | Process for treating metal rolls | James L. Maassel, Windsor J. Davies | 2000-10-24 |
| 5667844 | Tool treating process | James L. Maassel | 1997-09-16 |
| 5238712 | Method of preparing an internal combustion engine for use with engine oil substantially free of metallic and chemical friction modifiers | James L. Maassel | 1993-08-24 |
| 5068129 | Process for converting a fluid system of a machine from an oil based fluid system to a water based fluid system | James L. Maassel | 1991-11-26 |