Issued Patents All Time
Showing 501–525 of 537 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4397761 | Phosphate containing support for vanadium catalyst | Marvin M. Johnson | 1983-08-09 |
| 4397766 | Solubilized chromium salt in particulate support | Gil R. Hawley | 1983-08-09 |
| 4397769 | Olefin polymerization catalyst | John A. Sanbrano, Marvin M. Johnson | 1983-08-09 |
| 4398004 | Olefin polymerization with phosphated silica-chromium catalyst with boron-containing cocatalyst | Marvin M. Johnson | 1983-08-09 |
| 4397765 | Phosphated alumina or aluminum phosphate chromium catalyst | — | 1983-08-09 |
| 4384086 | Large pore volume olefin polymerization catalysts | John J. Meister | 1983-05-17 |
| 4382022 | Silica having titanium incorporated through use of peroxide | — | 1983-05-03 |
| 4378306 | Surface heat treatment of silica-containing catalyst base | M. Bruce Welch | 1983-03-29 |
| 4369295 | Impregnated second valence chromium compound in supported catalyst | — | 1983-01-18 |
| 4368303 | Titanium impregnated silica-chromium catalysts | — | 1983-01-11 |
| 4368301 | Solubilized chromium salt in polymerization catalyst | Gil R. Hawley | 1983-01-11 |
| 4364855 | Production of aluminum phosphate from concentrated mass | Marvin M. Johnson | 1982-12-21 |
| 4364842 | Phosphate supported chromium catalyst | Marvin M. Johnson | 1982-12-21 |
| 4364854 | Acid gelling aluminum phosphate from concentrated mass and catalyst containing same | Marvin M. Johnson | 1982-12-21 |
| 4364841 | Phosphate containing support with zerovalent chromium | Marvin M. Johnson | 1982-12-21 |
| 4364840 | Phosphated silica-chromium catalyst with boron-containing cocatalyst | Marvin M. Johnson | 1982-12-21 |
| 4364839 | Catalyst comprising chromium on silica/phosphate support | Marvin M. Johnson | 1982-12-21 |
| 4357451 | Chemical dehydroxylation of silica | — | 1982-11-02 |
| 4347161 | Polymerization of olefins | Richard E. Dietz | 1982-08-31 |
| 4339559 | Polymerization using silica from single phase controlled hydrolysis of silicate ester | — | 1982-07-13 |
| 4333860 | Solubilized chromium salt in polymerization catalyst | Gil R. Hawley | 1982-06-08 |
| 4325839 | Impregnated second valence chromium compound in supported catalyst | — | 1982-04-20 |
| 4308172 | Chemical dehydroxylation of silica | — | 1981-12-29 |
| 4307214 | SC.sub.2 activation of supported chromium oxide catalysts | Melvin B. Welch | 1981-12-22 |
| 4301034 | Silica from single phase controlled hydrolysis of silicate ester | — | 1981-11-17 |