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Molded products of polypropylene
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Patent number RE32542
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Issue date Nov 10, 1987
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Sumitomo Chemical Company, Limited
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Akinobu Shiga
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428 - Stock material or miscellaneous articles
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Process for producing propylene copolymer
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Patent number 4,367,322
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Issue date Jan 4, 1983
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Sumitomo Chemical Company, Ltd.
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Akinobu Shiga
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Molded products of polypropylene
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Patent number 4,283,463
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Issue date Aug 11, 1981
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Sumitomo Chemical Company, Limited
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Akinobu Shiga
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...