4. Chemistry of inorganic compounds
  5. Carbon or compound thereof
  6. Oxygen containing

Wilhelm Hagen

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Continuous prephosgenation process for the production of organic

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent

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Evaporating solutions which contain phosgene in a vacuum liquid

Distillation: processes – separatory – Distillation in apparatus or element of specific material
Patent

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Process for the production of carbon monoxide

Chemistry of inorganic compounds – Carbon or compound thereof – Oxygen containing
Patent

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Process for the purification of mixtures of toluenediisocyanate

Organic compounds -- part of the class 532-570 series – Organic compounds – Isocyanate esters
Reexamination Certificate

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Profile ID: LFUS-PAI-P-657145

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