Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10995257 | Process to produce oil or gas from a subterranean formation using a chelating agent | Cornelia Adriana De Wolf, Hisham Nasr-El-Din, Estevao De Oliveira Barra, Theodor Johannes Stanitzek | 2021-05-04 |
| 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 |