Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7998911 | Environmental friendly fracturing and stimulation composition and method of using the same | Paul Daniel Berger | 2011-08-16 |
| 7977284 | Non-estrogenic alkylphenol derivatives | Paul Daniel Berger | 2011-07-12 |
| 7863476 | Multifunctional anionic surfactants | Paul Daniel Berger | 2011-01-04 |