Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5234046 | Method of eliminating shrinkage porosity defects in the formation of cast molten metal articles using polystyrene chill | John W. Kuhn, Jerome D. VanAelst | 1993-08-10 |
| 5217059 | Casting core and method for forming a water jacket chamber within a cast cylinder block | John W. Kuhn | 1993-06-08 |
| 5215141 | Apparatus and method for controlling the countergravity casting of molten metal into molds | John W. Kuhn | 1993-06-01 |
| 5213149 | Mold and method for making variable thickness cast articles | Gary F. Ruff, John W. Kuhn | 1993-05-25 |
| 5205346 | Method and apparatus for countergravity casting molten metal | John W. Kuhn | 1993-04-27 |
| 5201357 | Method for forming cored passageways within cast metal articles | John W. Kuhn | 1993-04-13 |
| 5178203 | Apparatus for the countergravity casting of metals | John W. Kuhn | 1993-01-12 |