4. Liquid purification or separation
  5. Processes
  6. Liquid/liquid solvent or colloidal extraction or diffusing...

Friedhelm Steffens

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Method of liquid-liquid extraction using material exchange colum

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
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Process for purification of anhydrous hydrogen chloride gas

Chemistry of inorganic compounds – Halogen or compound thereof – Hydrogen halide
Reexamination Certificate

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Process for the distillative separation of aqueous amine...

Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Reexamination Certificate

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Process for the preparation of isocyanates in the gas phase

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

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Process for the preparation of isocyanates in the gas phase

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

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Profile ID: LFUS-PAI-P-668097

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