Issued Patents All Time
Showing 226–249 of 249 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4585526 | Separation of m-xylene from o-xylene by extractive distillation | An-I Yeh | 1986-04-29 |
| 4584063 | Separation of acetone from methanol by extractive distillation | Karl J. Warren | 1986-04-22 |
| 4569726 | Process for the separation of ethyl acetate from ethanol and water by extractive distillation | Pisant Ratanapupech | 1986-02-11 |
| 4566948 | Separation of isopropyl ether from isopropanol and water by extractive distillation | An-I Yeh | 1986-01-28 |
| 4551207 | Separation of isopropyl ether from acetone by extractive distillation | An-I Yeh | 1985-11-05 |
| 4549938 | Separation of methanol from methyl acetate by extractive distillation | An-I Yeh | 1985-10-29 |
| 4544454 | Separation of isopropyl ether from methyl ethyl ketone by extractive distillation | An-I Yeh | 1985-10-01 |
| 4543164 | Separation of methyl acetate from methanol by extractive distillation | An-I Yeh | 1985-09-24 |
| 4541526 | Folded carton beverage accessories dispenser | Stephen A. Flowers | 1985-09-17 |
| 4525245 | Separation of n-butyl acetate from n-butanol by extractive distillation | An-I Yeh | 1985-06-25 |
| 4514262 | Separation of benzene from non-aromatic hydrocarbons by extractive distillation | — | 1985-04-30 |
| 4510022 | Separation of isopropyl ether from isopropanol and water by extractive distillation | An-I Yeh | 1985-04-09 |
| 4507176 | Separation of n-butyl acetate from n-butanol by extractive distillation | An-I Yeh | 1985-03-26 |
| 4501645 | Separation of methanol from acetone by extractive distillation | An-I Yeh | 1985-02-26 |
| 4488937 | Separation of m-xylene from o-xylene by extractive distillation | An-I Yeh | 1984-12-18 |
| 4472528 | Catalyst for hydrotreating solvent refined coals and lignites | Nam-Kyu Kim | 1984-09-18 |
| 4470881 | Separation of ethyl acetate from methyl ethyl ketone by extractive distillation | — | 1984-09-11 |
| 4459178 | Separation of isopropyl ether from methyl ethyl ketone by extractive distillation | An-I Yeh | 1984-07-10 |
| 4459179 | Separation of isopropyl ether from acetone by extractive distillation | An-I Yeh | 1984-07-10 |
| 4379028 | Separation of ethyl acetate from ethanol and water by extractive distillation | Pisant Ratanapupech | 1983-04-05 |
| 4363704 | Separation of toluene from non-aromatic hydrocarbons by extractive distillation | — | 1982-12-14 |
| 4326995 | Catalyst for hydrotreating carbonaceous liquids | Frank P. McCandless, Ronald Ramer | 1982-04-27 |
| 4299668 | Separation of ethylbenzene from para- and meta-xylenes by extractive distillation | — | 1981-11-10 |
| 4292142 | Separation of ethylbenzene from para- and meta-xylenes by extractive distillation | — | 1981-09-29 |