Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4433728 | Process for selectively reducing the fluid injection rate or production rate of a well | Robert D. Sydansk | 1984-02-28 |
| 4301867 | Process for selectively reducing the permeability of a subterranean sandstone formation | Robert D. Sydansk, Sharon A. Stonecipher | 1981-11-24 |