Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5253698 | Combination sand cleaning and heat treating apparatus for sand casted metallic parts and method | John R. Keough, William R. Keough | 1993-10-19 |
| 5246510 | Method for producing a selectively surface hardened cast iron part | John R. Keough | 1993-09-21 |
| 5139579 | Method for preparing high silicon, low carbon austempered cast iron | John R. Keough, Douglas M. Pramstaller | 1992-08-18 |
| 5064478 | Method and apparatus for surface austempering of cast iron parts | John R. Keough, Douglas M. Pramstaller | 1991-11-12 |
| 5043028 | High silicon, low carbon austemperable cast iron | John R. Keough, Douglas M. Pramstaller | 1991-08-27 |
| 4949774 | Expendable cap device to minimize dross inclusions in the vacuum casting process | John R. Keough, William R. Keough | 1990-08-21 |
| 4891076 | Gray cast iron having both increased wear resistance and toughness | — | 1990-01-02 |
| 4737199 | Machinable ductile or semiductile cast iron and method | — | 1988-04-12 |
| 4666533 | Hardenable cast iron and the method of making cast iron | Roman M. Nowicki | 1987-05-19 |
| 4596606 | Method of making CG iron | Roman M. Nowicki | 1986-06-24 |
| 4484953 | Method of making ductile cast iron with improved strength | Roman M. Nowicki, Charles A. Stickels | 1984-11-27 |
| 4475956 | Method of making high strength ferritic ductile iron parts | Roman M. Nowicki, Charles A. Stickels | 1984-10-09 |
| 4363661 | Method for increasing mechanical properties in ductile iron by alloy additions | — | 1982-12-14 |
| 4191563 | Continuous stream treatment of ductile iron | Herschel B. Smartt | 1980-03-04 |