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Ocular lens material
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Patent number 5,250,583
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Issue date Oct 5, 1993
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Menicon Co., Ltd.
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Toru Kawaguchi
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Hard contact lens material
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Patent number 5,142,009
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Issue date Aug 25, 1992
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Tomei Sangyo Kabushiki Kaisha
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Toru Kawaguchi
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polymer-type polymerization initiator
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Patent number 5,134,213
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Issue date Jul 28, 1992
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Tomei Sangyo Kabushiki Kaisha
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Toru Kawaguchi
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polymer-type polymerization initiator
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Patent number 5,082,912
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Issue date Jan 21, 1992
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Tomei Sangyo Kabushiki Kaisha
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Toru Kawaguchi
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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