Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4778607 | Method of diluting a concentrated polymer solution for use in a hydrocarbon recovery process | Wayne E. Luetzelschwab | 1988-10-18 |
| 4744419 | Conformance improvement in a subterranean hydrocarbon-bearing formation using a crosslinked polymer | Robert D. Sydansk | 1988-05-17 |
| 4687586 | Oil recovery process and system | John S. Rhudy | 1987-08-18 |
| 4683949 | Conformance improvement in a subterranean hydrocarbon-bearing formation using a polymer gel | Robert D. Sydansk | 1987-08-04 |
| RE32114 | Oil recovery process | John S. Rhudy | 1986-04-15 |
| 4580627 | Oil recovery process and system | John S. Rhudy | 1986-04-08 |
| 4503909 | Oil recovery process and system | John S. Rhudy | 1985-03-12 |
| 4433727 | Oil recovery process | John S. Rhudy | 1984-02-28 |
| 4397748 | Treatment of sanitary sewer systems | John S. Rhudy | 1983-08-09 |
| 4383930 | Mobility control agent | John S. Rhudy, Brian L. Phillips | 1983-05-17 |