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Sulfur-containing polyurethane base lens resin
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Patent number 4,780,522
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Issue date Oct 25, 1988
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Mitsui Toatsu Chemicals, Incorporated
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Nobuyuki Kajimoto
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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S-alkyl thiocarbamate base lens resin
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Patent number 4,689,387
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Issue date Aug 25, 1987
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Mitsui Toatsu Chemicals, Incorporated
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Nobuyuki Kajimoto
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Sulfur-containing polyurethane base lens resin
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Patent number 4,680,369
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Issue date Jul 14, 1987
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Mitsui Toatsu Chemicals, Incorporated
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Nobuyuki Kajimoto
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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