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Polymerization of vinylpyrrolidone
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Patent number 5,306,795
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Issue date Apr 26, 1994
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ISP Investments Inc.
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Jenn S. Shih
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Purification of vinyl lactam polymers
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Patent number 5,239,053
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Issue date Aug 24, 1993
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ISP Investments Inc.
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Susan Y. Tseng
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Zwitterion polymers
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Patent number 4,985,487
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Issue date Jan 15, 1991
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GAF Chemicals Corporation
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Jenn S. Shih
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Insoluble vinyl lactam clarifiers
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Patent number 4,792,400
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Issue date Dec 20, 1988
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GAF Corporation
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James Dougherty
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Insoluble vinyl lactam clarifiers
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Patent number 4,764,588
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Issue date Aug 16, 1988
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GAF Corporation
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Terry E. Smith
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...