Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5214224 | Dispersing asphaltenes in hydrocarbon refinery streams with .alpha.-olefin/maleic anhydride copolymer | David G. Comer | 1993-05-25 |
| 5205964 | Method of breaking crude oil emulsions using ethylene carbonate adducts of alkylphenol-formaldehyde resins | J. Derwin DeShazo | 1993-04-27 |