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

Won S. Kwak

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Method for synthesizing spiro-oxazines

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

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Photochromic article

Compositions – Light transmission modifying compositions – Displaying color change
Patent

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Photochromic compound and articles containing the same

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

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Photochromic compound and articles containing the same

Compositions – Light transmission modifying compositions – Displaying color change
Patent

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Photochromic compound and articles containing the same

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
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