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Inventor: Yeh; Gene H. C.
Address: Bartlesville, OK
No. of patents: 6
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4923649 |
Pelletizing polymers |
May 8, 1990 |
| A method of pelletizing polymer utilizing a liquid medium characterized in that the liquid medium boils at a temperature greater than the melting temperature of the polymer and is immiscible with the molten polymer so that (1) polymer can be heated in the liquid medium to a temperature t |
| 4791086 |
Olefin polymerization |
December 13, 1988 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product produced by reacting a lanthanide hydride, a Lewis acid, and an electron donor ligand with an organoaluminum cocatalyst component and its use in the polymerization of olefins, especial |
| 4699962 |
Olefin polymerization |
October 13, 1987 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product produced by reacting a lanthanide hydride, a Lewis acid, and an electron donor ligand with an organoaluminum cocatalyst component and its use in the polymerization of olefins, especial |
| 4575538 |
Olefin polymerization |
March 11, 1986 |
| A process for producing a novel-highly active lanthanide containing catalysts comprising products formed by reacting a lanthanide halide, and an electron doner ligand with an organometal cocatalyst component and its use in the polymerization of olefins, especially olefins such as ethylen |
| 4556647 |
Olefin polymerization |
December 3, 1985 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product formed by admixing a lanthanide hydroxyhalide and an electron donor bidentate organic ligand chosen from among diamines, dihydric alcohols, and diketones with an organoaluminum cocatal |
| 4544718 |
Olefin polymerization |
October 1, 1985 |
| A process for producing a novel-highly active lanthanide containing catalyst comprising the product formed by admixing a lanthanide hydroxyhalide and an electron donor bidentate organic ligand chosen from among diamines, dihydric alcohols, and diketones with an organoaluminum cocatal |
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