Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6871745 | Distributor apparatus for providing a uniform discharge of material | John D. Lynn, Nazareno M. Medei | 2005-03-29 |
| 6036079 | Method for refurbishing a coke oven doorjamb | — | 2000-03-14 |
| 5941445 | Apparatus for refurbishing a coke oven doorjamb | — | 1999-08-24 |
| 5791100 | Planking and method of use | Stephen B. Schieferly, John J. Ferretti | 1998-08-11 |
| 5401004 | Method and apparatus for installing a nozzle insert in a steelmaking ladle | John P. Hoffman, John Lewis Hogan, III, Edward T. Witek | 1995-03-28 |
| 5337470 | Method and apparatus for removing a nozzle insert from a steelmaking ladle | John P. Hoffman, Edward T. Witek, Donald J. Idstein | 1994-08-16 |
| 5321875 | Well block centering tool | John P. Hoffman, Donald J. Idstein | 1994-06-21 |