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Patent applications and USPTO patent grants for Hsieh; John T. T..The latest application filed is for "comonomer pretreated bimetallic catalyst for blow molding and film applications".
Patent | Date |
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Comonomer pretreated bimetallic catalyst for blow molding and film applications Grant 6,037,296 - Hsieh , et al. March 14, 2 | 2000-03-14 |
Mixed Ziegler and chromium catalyst and process for preparing a broad molecular weight distribution HDPE Grant 5,330,950 - Hsieh July 19, 1 | 1994-07-19 |
Producing blown film and blends from bimodal high density high molecular weight film resin using magnesium oxide-supported Ziegler catalyst Grant 5,284,613 - Ali , et al. February 8, 1 | 1994-02-08 |
Polymerization catalyst Grant 4,435,518 - Pennington , et al. March 6, 1 | 1984-03-06 |
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