4. Bleaching and dyeing; fluid treatment and chemical modification
  5. Diffusion transfer dyeing process, transfer sheet and product
  6. Dry heat treatment for penetration

Kenichi Kamata

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Method of dyeing plastic lens and a dyeing system used therein

Bleaching and dyeing; fluid treatment and chemical modification – Diffusion transfer dyeing process – transfer sheet and product – Dry heat treatment for penetration
Reexamination Certificate

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Subsystem of producing dye base body used for dyeing of...

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

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Profile ID: LFUS-PAI-P-2658548

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