Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12411113 | Multilayer bolthole nondestructive inspection (NDI) | John A. Nagel, II, David Forsyth, Ajay Shah | 2025-09-09 |
| 5708209 | Apparatus and method for ultrasonic particle detection in molten metal | Richard C. Stiffler, Ronald C. Wojnar, Lawrence W. Cisko, John M. Urbanic | 1998-01-13 |
| 4829810 | Filament drive circuit | Daniel A. Anderson, Ronald C. Wojnar | 1989-05-16 |
| 4731732 | Method and apparatus for determining soluble gas content | Ronald C. Wojnar | 1988-03-15 |
| 4685325 | Measurement of gas content in molten metal using a constant current source | — | 1987-08-11 |