4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Oxygen containing

Shukichi Ugamura

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Gas-phase dehydration reaction process

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
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Method of purifying N-(2-hydroxyethy)-2-pyrrolidone

Distillation: processes – separatory – Plural distillations performed on same material – One a distillation under positive pressure or vacuum
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2554307

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