Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882065 | Purification of sterols with activated carbon as adsorbent and chlorobenzene as desorbent | — | 1989-11-21 |
| 4849112 | Adsorption separation of sterols from tall oil pitch with carbon adsorbent | Steven P. Johnson | 1989-07-18 |
| 4835334 | Two-stage adsorptive separation process for purifying 2,6 Dimethylnaphthalene | Simon H. Hobbs | 1989-05-30 |