Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4752332 | Treating manganese-containing ores with a metal sulfide | Rebekah Wu, Larry Tsai, Barbara A. Krebs-Yuill, David A. Milligan, John S. McBride, Jr. +1 more | 1988-06-21 |
| 4740243 | Metal value recovery from metal sulfide containing ores | Barbara A. Krebs-Yuill, Larry Tsai, Rebekah Wu, David A. Milligan | 1988-04-26 |
| 4272250 | Process for removal of sulfur and ash from coal | Emmett H. Burk, Jr., Jui-Yuan Sun | 1981-06-09 |
| 4270927 | Process for removal of sulfur and ash from coal | Emmett H. Burk, Jr., Jui-Yuan Sun | 1981-06-02 |