Inventor
UKAI Ryuji
JP17 patents
⚠️ This page may combine multiple inventors who share the name “UKAI Ryuji”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LG DATA STORAGE INC
14 patentsUS11143872B2Oct 12, 2021
Waveguide and video image display device
HITACHI LG DATA STORAGE INC2 citations73
US10976554B2Apr 13, 2021
Light guide plate and image display apparatus
HITACHI LG DATA STORAGE INC2 citations72
US10771772B2Sep 8, 2020
Image display device
HITACHI LG DATA STORAGE INC3 citations72
US10401631B2Sep 3, 2019
Image display device
HITACHI LG DATA STORAGE INC2 citations71
US11112610B2Sep 7, 2021
Image display device and head mounted display using the same
HITACHI LG DATA STORAGE INC2 citations69
US11543648B2Jan 3, 2023
Virtual image projection device
HITACHI LG DATA STORAGE INC0 citations62
US11106040B2Aug 31, 2021
Video display apparatus and video display system
HITACHI LG DATA STORAGE INC1 citations62
US10839732B2Nov 17, 2020
Video display device
HITACHI LG DATA STORAGE INC1 citations62
US10304369B2May 28, 2019
Image display device having a light source and a control unit configured to control a driving current at first and second gradation values
HITACHI LG DATA STORAGE INC1 citations62
US11442353B2Sep 13, 2022
Virtual image projection device
HITACHI LG DATA STORAGE INC0 citations60
US11428939B2Aug 30, 2022
Light-guiding plate, light-guiding plate manufacturing method, and video display device
HITACHI LG DATA STORAGE INC0 citations60
US10859839B2Dec 8, 2020
Head mounted display
HITACHI LG DATA STORAGE INC0 citations49
US12306427B2May 20, 2025
Video display device and video display system
HITACHI LG DATA STORAGE INC0 citations48
US12298510B2May 13, 2025
Head-mounted display
HITACHI LG DATA STORAGE INC0 citations48