Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5003006 | Oil reservoir permeability control | Harold S. Chung, Dennis H. Hoskin, Thomas O. Mitchell, Paul Shu | 1991-03-26 |
| 4776398 | Oil reservoir permeability control | Harold S. Chung, Dennis H. Hoskin, Thomas O. Mitchell, Paul Shu | 1988-10-11 |