Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892589 | Composition comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose | William J. Kirkland, Carl A. Lukach | 1990-01-09 |
| 4784693 | Cementing composition and aqueous hydraulic cementing solution comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose | William J. Kirkland, Carl A. Lukach | 1988-11-15 |