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

P. E. Purwin

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Enhanced crystal acidity exchange method

Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs
Reexamination Certificate

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Para-alkylation of aromatic primary amines

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate

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