Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8098048 | Battery charger with integrated cell balancing | — | 2012-01-17 |
| 6562764 | Invert well service fluid and method | R. Ashley Donaldson, Steven Blattel | 2003-05-13 |
| 5985801 | Oil-free water-soluble hydroxyethyl cellulose liquid polymer dispersion | — | 1999-11-16 |
| 4758357 | Dispersible hydrophilic polymer compositions for use in viscosifying heavy brines | — | 1988-07-19 |
| 4394273 | Defoamers for aqueous liquids containing soluble zinc salts | — | 1983-07-19 |