Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9725643 | Foam or viscosified composition containing a chelating agent | Cornelia Adriana De Wolf, Hisham Nasr-El-Din, Guanqun Wang, Josef Johannes Maria Baltussen, Conrardus Hubertus Joseph Theeuwen +2 more | 2017-08-08 |
| 9587171 | Ammonium salts of chelating agents and their use in oil and gas field applications | Cornelia Adriana De Wolf, James N. Lepage, Hisham Nasr-El-Din, Mohamed Ahmed Nasr-El-Din Mahmoud, Noble Thekkemelathethil George | 2017-03-07 |
| 9556378 | Chelating agent precursors, fluids containing them, and their use | James N. Lepage, Cornelia Adriana De Wolf, Johanna Hendrika Bemelaar, Adrianus Maria Reichwein, Axel Carstens | 2017-01-31 |