Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6435277 | Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations | Qi Qu, Erik Nelson, Dean M. Willberg, Mathew M. Samuel, Frank F. Chang +4 more | 2002-08-20 |