Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494250 | Impregnated alumina-based core and method | Gregory R. Frank, Ronald J. Keller, Rodney S. Haaland, Alfred Kaulius | 2002-12-17 |
| 6186217 | Multipiece core assembly | William E. Sikkenga | 2001-02-13 |
| 5498132 | Improved hollow cast products such as gas-cooled gas turbine engine blades | Eugene J. Carozza, Gregory R. Frank, Ronald R. Robb | 1996-03-12 |
| 5394932 | Multiple part cores for investment casting | Eugene J. Carozza, Gregory R. Frank, Ronald R. Robb | 1995-03-07 |
| 5296308 | Investment casting using core with integral wall thickness control means | William E. Sikkenga | 1994-03-22 |