Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7635028 | Acidic internal breaker for viscoelastic surfactant fluids in brine | Leiming Li, Lijun Lin, Toan Bui | 2009-12-22 |
| 7565929 | Degradable material assisted diversion | Oscar Bustos, Christopher N. Fredd, Yiyan Chen, Goke Adeogun | 2009-07-28 |
| 7431087 | Internal breaker for oilfield fluids | Philip F. Sullivan, Belgin Baser, Yiyan Chen, Mehmet Parlar, Gregory Kubala | 2008-10-07 |
| 7398829 | Methods of limiting leak off and damage in hydraulic fractures | Richard D. Hutchins, Marie Noelle Dessinges, Erik Nelson | 2008-07-15 |
| 7387986 | Viscoelastic surfactant rheology modification | Yiyan Chen | 2008-06-17 |
| 7287590 | Internal breaker for oilfield fluids | Philip F. Sullivan, Belgin Baser, Yiyan Chen, Mehmet Parlar, Gregory Kubala | 2007-10-30 |
| 7112645 | Polycarbonate composition and method of making thereof | Jose Maria Franco, Hiromi Ishida, Miguel Angel Salomon, Tomoaki Shimoda | 2006-09-26 |