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Yi-Feng CHIU
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Hsinchu, TW
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Patents Grants
last 30 patents
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Patent Grant
Double-sided aspheric diffractive multifocal lens, manufacture, and...
Patent number
11,963,868
Issue date
Apr 23, 2024
AST Products, Inc.
Yi-Feng Chiu
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Patents Applications
last 30 patents
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Patent Application
DOUBLE-SIDED ASPHERIC DIFFRACTIVE MULTIFOCAL LENS, MANUFACTURE, AND...
Publication number
20210369445
Publication date
Dec 2, 2021
ICARES Medicus, Inc.
Yi-Feng CHIU
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE