Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4810286 | Method for reducing dissolved oxygen and carbon contents in molten steel | Mark Schlichting | 1989-03-07 |
| 4737272 | Froth flotation method and apparatus | Wilfred L. Freyberger | 1988-04-12 |