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

Judith Ratner

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Photochromic naphthopyran compounds

Compositions – Light transmission modifying compositions – Displaying color change
Reexamination Certificate

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Photochromic spirooxazine polysiloxanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent
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Profile ID: LFUS-PAI-P-1658461

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