4. Compositions
  5. Preservative agents
  6. Anti-oxidants or chemical change inhibitants

Christian Guckel

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Catalyst and method for preparing phthalic anhydride

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate

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Multi-layer catalyst for producing phthalic anhydride

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate

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Phenolic antioxidants in crystalline form

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

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Stabilization of natural composites

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Reexamination Certificate

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Use of a multi-layer catalyst for producing phthalic anhydride

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2270734

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