Issued Patents All Time
Showing 76–100 of 190 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5179052 | One step synthesis of metyl t-butyl ether from 5-butanol using fluorosulfonic acid-modified zeolite catalysts | — | 1993-01-12 |
| 5177301 | Method of separating isobutylene from a C-4 hydrocarbon fraction using a heteropoly acid on an inert support | — | 1993-01-05 |
| 5171896 | Alkylphenol synthesis using acid-modified inorganic clay catalysts | Yu-Hwa E. Sheu | 1992-12-15 |
| 5169992 | Bisphenol A production using acidic clay catalysts | — | 1992-12-08 |
| 5162592 | One-step synthesis of methyl t-butyl ether from t-butanol using multimetal-modified zeolite catalysts | John R. Sanderson, Peishing E. Dai | 1992-11-10 |
| 5159123 | Synthesis of hydroxyl-terminated polybutadienes using glycol ether acetate solvents | Edward T. Marquis | 1992-10-27 |
| 5159122 | Catalytic decomposition of peroxide impurities in a methyl tertiary butyl ether recycle stream | John R. Sanderson, Neal J. Grice | 1992-10-27 |
| 5157162 | One step synthesis of methyl t-butyl ether from t-butanol using fluorosulfonic acid-modified clay catalysts | — | 1992-10-20 |
| 5157161 | One-step synthesis of methyl t-butyl ether from t-butanol using hydrogen fluoride-modified montmorillonite clays | — | 1992-10-20 |
| 5146041 | Method of separating isobutylene from a C-4 hydrocarbon fraction using montmorillonite catalysts | — | 1992-09-08 |
| 5146030 | Process for oligomerizing olefins using halogen-free titanium salts or halogen-free zirconium salts on clays | John R. Sanderson, Edward T. Marquis | 1992-09-08 |
| 5120891 | Process for oligomerizing olefins using a super-dealuminated Y-zeolite | John R. Sanderson, Pei-Shing E. Dai | 1992-06-09 |
| 5107027 | Tert-butylamine synthesis over montmorillonite clays | Neal J. Grice | 1992-04-21 |
| 5099072 | Method for one-step synthesis of methyl t-butyl ether | — | 1992-03-24 |
| 5097085 | Process for oligomerizing olefins using phosphorous-containing acid on montmorillonite clay | John R. Sanderson | 1992-03-17 |
| 5081318 | One step synthesis of methyl t-butyl ether from t-butanol using fluorosulfonic acid-modified zeolite catalysts | — | 1992-01-14 |
| 5071980 | Nickel-based dual catalyst systems effective in suppressing carbon dioxide formation during diethylene glycol amination | — | 1991-12-10 |
| 5059725 | One step synthesis of methyl t-butyl ether from t-butanol plus methanol using Group IV oxides treated with sulfates or sulfuric acid | John R. Sanderson | 1991-10-22 |
| 5053569 | Process for oligomerizing olefins to prepare base stocks for synthetic lubricants | Edward T. Marquis, John R. Sanderson | 1991-10-01 |
| 5043484 | Synthesis of hydroxyl-terminated polybutadienes using glycol ether solvents | Edward T. Marquis | 1991-08-27 |
| 5037838 | Method for the manufacture of triethylenediamine using a pelleted titania-supported tungstopyrophosphate catalyst | Robert L. Zimmerman | 1991-08-06 |
| 5025113 | Catalytic preparation of tertiary butyl alcohol from tertiary butyl hydroperoxide | John R. Sanderson | 1991-06-18 |
| 5025112 | Purification of cumene recycle streams | John R. Sanderson, Edward T. Marquis | 1991-06-18 |
| 5011926 | Nickel-based dual catalyst systems effective in suppressing carbon dioxide formation during diethylene glycol amination | — | 1991-04-30 |
| 5003112 | Tertiary amyl methyl ether from C-5 olefin streams | — | 1991-03-26 |