Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9234127 | Angular abrasive proppant, process for the preparation thereof and process for hydraulic fracturing of oil and gas wells | Gabriel Warwick Kerr de Paiva Cortes | 2016-01-12 |
| 7954548 | Proppant for hydraulic fracturing of oil and gas wells | Sebastiao CURIMBABA, Gabriel Warwick Kerr de Paiva Cortes | 2011-06-07 |