4. Catalyst, solid sorbent, or support therefor: product or process
  5. Catalyst or precursor therefor
  6. Phosphorus or compound containing same

Won-ho Lee

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Heteropoly acid catalyst and method of preparing the same

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Reexamination Certificate

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Heteropolyacid catalyst and method for producing the same

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Reexamination Certificate

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Purification method of terephthal aldehyde

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

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