Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11655776 | Cylinder block casting slab core cast geometry for sawcut entrance enhancement | Ronald J. Petrus, Brian C. Leuenhagen, William A. Berry, Qigui Wang, James T. Singer | 2023-05-23 |
| 11554413 | Hybrid cam bore sand core with metal chills for cast aluminum block | Ronald J. Petrus, Qigui Wang, Brian C. Leuenhagen | 2023-01-17 |