Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5897772 | Multi-stage flotation column | Daxin He, Fuxin Ding | 1999-04-27 |
| 4613429 | Process for removing mineral matter from coal | George E. Klinzing | 1986-09-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5897772 | Multi-stage flotation column | Daxin He, Fuxin Ding | 1999-04-27 |
| 4613429 | Process for removing mineral matter from coal | George E. Klinzing | 1986-09-23 |