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Takuji HIGASHIKAWA
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Tokyo, JP
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last 30 patents
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Patent Grant
Visual function test device, visual function training device, and m...
Patent number
11,464,405
Issue date
Oct 11, 2022
NAC IMAGE TECHNOLOGY INC.
Takuji Higashikawa
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
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Patent Application
CONTRAST-SENSITIVITY TEST DEVICE, OPTICAL-ELEMENT EVALUATION DEVICE...
Publication number
20240285162
Publication date
Aug 29, 2024
NAC IMAGE TECHNOLOGY INC.
Takuji HIGASHIKAWA
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Application
VISUAL FUNCTION TEST DEVICE, VISUAL FUNCTION TRAINING DEVICE, AND M...
Publication number
20200100668
Publication date
Apr 2, 2020
NAC IMAGE TECHNOLOGY INC.
Takuji HIGASHIKAWA
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE