Issued Patents All Time
Showing 476–500 of 537 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4528338 | Polymerization process using chromium catalyst on mixed metal phosphate with organoboron cocatalysts | Marvin M. Johnson | 1985-07-09 |
| 4504638 | Ethylene polymers made from phosphate supported chromium catalyst | Marvin M. Johnson | 1985-03-12 |
| 4503201 | Polymerization with CO reduced chromyl halide on silica catalyst | Phil M. Stricklen | 1985-03-05 |
| 4499199 | TiCl.sub.4 Treated with organomagnesium/protonating agent | — | 1985-02-12 |
| 4489172 | Activated chromium catalyst treated with tertiary alcohol | — | 1984-12-18 |
| 4481302 | Chromium on mixed metal phosphate base with organoboron cocatalyst | Marvin M. Johnson | 1984-11-06 |
| 4477586 | Polymerization of olefins | — | 1984-10-16 |
| 4472519 | Polymerization catalyst system | — | 1984-09-18 |
| 4460756 | Olefin polymerization method | John A. Sanbrano, Marvin M. Johnson | 1984-07-17 |
| 4454293 | Polymerization using partially hydrolyzed silicate treatment of catalyst support | — | 1984-06-12 |
| 4444964 | Polymerization process using phosphate supported chromium catalyst | Marvin M. Johnson | 1984-04-24 |
| 4444966 | Polymerization using phosphated alumina or aluminum phosphate chromium catalyst | — | 1984-04-24 |
| 4444968 | Olefin polymerization with phosphate supported zerovalent chromium | Marvin M. Johnson | 1984-04-24 |
| 4444963 | Polymerization process using catalysts comprising chromium on silica/phosphate support | Marvin M. Johnson | 1984-04-24 |
| 4444962 | Polymerization process using catalysts with acid gelled aluminum phosphate base | Marvin M. Johnson | 1984-04-24 |
| 4442274 | Polymerization process using a phosphate containing support for vanadium catalyst | Marvin M. Johnson | 1984-04-10 |
| 4439543 | Co Reduced chromyl halide on silica catalyst | Phil M. Stricklen | 1984-03-27 |
| 4434280 | Polymerization process using surface heat treated silica-containing catalyst base | M. Bruce Welch | 1984-02-28 |
| 4424320 | Polymerization with a silica base catalyst having titanium incorporated through use of peroxide | — | 1984-01-03 |
| 4424139 | Catalyst comprising a phosphate and with a bis-(cyclopentadienyl)chromium(II) compound | James N. Short | 1984-01-03 |
| 4419268 | Partially hydrolyzed silicate treatment of catalyst support | — | 1983-12-06 |
| RE31443 | Treatment of silica | Melvin B. Welch | 1983-11-15 |
| 4405768 | Polymerization process using chromium on a support treated with titanium polymer | — | 1983-09-20 |
| RE31390 | Treatment of silica | Melvin B. Welch | 1983-09-20 |
| 4402864 | Catalyst support treated with titanium polymer | — | 1983-09-06 |