4. Record receiver having plural interactive leaves or a colorless
  5. Having a colorless color-former, developer therefor, or...
  6. Identified color-former

Manfred Klade

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Chromogenic dicyanomethylenepyrazolinones

Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent
Patent

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Chromogenic dicyanomethylenepyrazolinones

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

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Heat sensitive recording material containing chromogenic dicyano

Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified color-former
Patent

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Profile ID: LFUS-PAI-P-725911

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