Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4268403 | Oil recovery using a dimethylamide in a fluid carrier | Peter Jeffrey Young, Miguel L. Pulido | 1981-05-19 |
| 4250269 | Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants | Philip M. Hoekstra, John D. Pera | 1981-02-10 |