Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743438 | Process for producing phosphoric acid from low purity phosphate rock | George A. Kennedy | 1988-05-10 |
| 4565625 | Beneficiation of phosphate ores containing surface activated silica | Shuang-shii Hsieh | 1986-01-21 |
| T105603 | Process for producing phosphoric acid from low purity phosphate rock | George A. Kennedy | 1985-07-02 |
| T105404 | Beneficiation of phosphate ores containing surface activated silica | Shuang-shii Hsieh | 1985-05-07 |
| 4486301 | Method of beneficiating high carbonate phosphate ore | Shuang-shii Hsieh | 1984-12-04 |
| T104304 | Method of beneficiating high carbonate phosphate ore | Shuang-shii Hsieh | 1984-06-05 |
| 4287053 | Beneficiation of high carbonate phosphate ores | Shuang-shii Hsieh | 1981-09-01 |
| T100603 | Beneficiation of high carbonate phosphate ores | Shuang-shii Hsieh | 1981-05-05 |