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Tokai Optical Co Ltd patents

Recent patent applications related to Tokai Optical Co Ltd. Tokai Optical Co Ltd is listed as an Agent/Assignee. Note: Tokai Optical Co Ltd may have other listings under different names/spellings. We're not affiliated with Tokai Optical Co Ltd, we're just tracking patents.

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Additive for imparting ultraviolet absorbency and/or high refractive index to matrix, and resin member using same

wherein R10a to R12a each represent a divalent hydrocarbon group or the like; and R13a represents a monovalent hydrocarbon group or the like.... Tokai Optical Co Ltd

Deviation-preventing coating material

[Solution] There is provided a displacement prevention coating agent with which the front and rear surfaces of a lens are coated so that when cutting processing is performed on an end surface of the lens where, for example, a water-repellent coat layer is formed as a membrane such that the... Tokai Optical Co Ltd

Optical product and spectacle lens

[Solution] An optical product (spectacle lens) of the present invention includes: a base; and an optical multilayer film formed on a surface of the base. The optical multilayer film includes six or more layers in which a low refractive index layer and a high refractive index layer are alternately disposed... Tokai Optical Co Ltd

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Tokai Optical Co Ltd in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Tokai Optical Co Ltd with additional patents listed. Browse our Agent directory for other possible listings. Page by