Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10344343 | Multiple chamber material-stirring lance and method | — | 2019-07-09 |
| 10240218 | Coaxial material-stirring lance and method of use | — | 2019-03-26 |
| 10151534 | Method for slag removal during metal processing | — | 2018-12-11 |
| 10132567 | Apparatus for slag removal during metal processing | — | 2018-11-20 |
| 9259780 | Rotational lance drive and rotational lance injection method | Joseph R. Waitlevertch, Nicholas S. Romeo | 2016-02-16 |
| 8623270 | Dual outlet injection system | Joseph R. Waitlevertch, Michael Ross | 2014-01-07 |
| 6010658 | Apparatus for desulfurization of iron utilizing two spaced apart lances | Michael Ross, Ronald L. Downard, Joseph R. Waitlevertch | 2000-01-04 |
| 5108075 | Orifice valve assembly | Ronald L. Downard, Robert C. Kays | 1992-04-28 |