Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387239 | Recovery of metals from ore | Willem P. C. Duyvesteyn, Manuel R. Lastra | 2002-05-14 |
| 6074558 | Biochemical treatment of bitumen froth tailings | Willem P. C. Duyvesteyn, Bernardus Josephus Paulus Maria Huls | 2000-06-13 |
| 5968349 | Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands | Willem P. C. Duyvesteyn, Merijn Picavet | 1999-10-19 |
| 5429659 | Oxidation of metal sulfides using thermotolerant bacteria | Peter Spencer, Jack Barrett, Martin N. Hughes, Robert K. Poole | 1995-07-04 |