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

Weili Zhao

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Indolinospiropyran compounds and methods for their manufacture

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

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Indolinospiropyran compounds and methods for their manufacture

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

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Photochromic bis-naphthopyran compounds and methods for...

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

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Photochromic bis-naphthopyran compounds and methods for...

Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Reexamination Certificate

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Photochromic oxazine compounds and methods for their...

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

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Profile ID: LFUS-PAI-P-2672883

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