Issued Patents All Time
Showing 201–225 of 249 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4693788 | Separation of t-amyl alcohol from isobutanol by extractive distillation | Michael John Shanahan | 1987-09-15 |
| 4693787 | Separation of t-Amyl alcohol from isobutanol by extractive distillation | Michael John Shanahan | 1987-09-15 |
| 4692219 | Separation of formic acid from acetic acid by extractive distillation | — | 1987-09-08 |
| 4690734 | Separation of n-amyl acetate from n-amyl alcohol by extractive distillation | An-I Yeh | 1987-09-01 |
| 4687647 | Conversion of molybdenite to molybdenum dioxide using petroleum or coal tar pitches | — | 1987-08-18 |
| 4676872 | Separation of m-xylene from o-xylene by extractive distillation with adiponitrile and mixtures thereof | An-I Yeh | 1987-06-30 |
| 4676874 | Separation of n-propyl acetate from n-propanol and water by extractive distillation | An-I Yeh | 1987-06-30 |
| 4676875 | Separation of m-xylene from o-xylene by extractive distillation | An-I Yeh | 1987-06-30 |
| 4675080 | Separation of isopropanol from isopropyl acetate by extractive distillation | Mark G. Vosburgh | 1987-06-23 |
| 4673466 | Separation of n-hexyl alcohol from n-hexyl acetate by extractive distillation | — | 1987-06-16 |
| 4673465 | Separation of m-xylene from o-xylene by extractive distillation with polychloro compounds | An-I Yeh | 1987-06-16 |
| 4670106 | Separation of n-amyl acetate and water from n-amyl alcohol by extractive distillation | An-I Yeh | 1987-06-02 |
| 4670105 | Dehydration of propanoic acid by extractive distillation | An-I Yeh | 1987-06-02 |
| 4666563 | Separation of isopropyl ether from isopropanol and water by extractive distillation | An-I Yeh | 1987-05-19 |
| 4666560 | Separation of isopropanol from isopropyl acetate and water by extractive distillation | Mark G. Vosburgh | 1987-05-19 |
| 4661209 | Separation of methyl t-butyl ether from hydrocarbons by extractive distillation | — | 1987-04-28 |
| 4654123 | Dehydration of ethanol by extractive distillation | An-I Yeh | 1987-03-31 |
| D288399 | Beverage and accessories dispenser | Stephen A. Flowers | 1987-02-24 |
| 4642167 | Separation of isobutyl acetate from isobutanol by extractive distillation | An-I Yeh | 1987-02-10 |
| 4642166 | Dehydration of formic acid by extractive distillation | An-I Yeh | 1987-02-10 |
| 4631115 | Dehydration of ethanol by extractive distillation | An-I Yeh | 1986-12-23 |
| 4620901 | Separation of acetone from methanol by extractive distillation | Karl J. Warren | 1986-11-04 |
| 4601791 | Separation of n-propanol from allyl alcohol by extractive distillation | Mark G. Vosburgh | 1986-07-22 |
| 4597834 | Separation of methyl acetate from methanol by extractive distillation | An-I Yeh | 1986-07-01 |
| 4592805 | Separation of n-propyl acetate from n-propanol by extractive distillation | An-I Yeh | 1986-06-03 |