Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941533 | Subterranean permeability modification by using microbial polysaccharide polymers | Shapour Vossoughi | 1990-07-17 |
| 4908310 | Water insoluble polysaccharide polymer and method thereof | — | 1990-03-13 |