4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Heterocyclic carbon compounds containing a hetero ring...

Albert Santo Stella

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Method for making polyetherimides

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate

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Method for purifying bisimides

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Method for purifying oxybisphthalic anhydrides

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Method of making bisimides

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate

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Method of purifying dianhydrides

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
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Profile ID: LFUS-PAI-P-2274348

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