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| Number | Title | Issue Date |
| 7435761 | Microporous polyethylene film and method of producing the same Disclosed is a microporous polyethylene film for a battery separator and a method of producing the same. The microporous polyethylene film comprises a resin mixture, which includes 100 parts by weight of composition containing 20-50 wt % polyethylene with a weight a... | 10/14/2008 |
| 7431749 | Catalytic filter for removing soot particulates from diesel engine exhaust and method of preparing the same Disclosed is a catalytic filter for removing soot particulates from diesel engine exhaust, which is comprised of monolithic oxidation catalyst upstream of the catalytic filter, which effectively oxidize gaseous pollutants and volatile organic fractions, and a cataly... | 10/07/2008 |
| 7417004 | Catalyst for dimethyl ether synthesis and its preparation methods This invention relates to a catalyst for synthesis of dimethyl ether and its preparation methods. More specifically, this invention relates to a catalyst with improved formulation for a highly efficient synthesis of dimethyl ether via dehydration of methanol. These ... | 08/26/2008 |
