Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877490 | Dehydration of formic acid by extractive distillation with dicarboxylic acids | Lloyd Berg, Kraig M. Wendt | 1989-10-31 |
| 4859285 | Separation of 2-pentanone from formic acid by extractive distillation | Lloyd Berg, Thomas H. Flower | 1989-08-22 |
| 4806209 | Separation of formic acid from dioxane by extractive distillation | Lloyd Berg | 1989-02-21 |
| 4801357 | Separation of acetic acid from dioxane by extractive distillation | Lloyd Berg | 1989-01-31 |
| 4801358 | Separation of acetic acid from dioxane by extractive distillation | Lloyd Berg | 1989-01-31 |