Inventor
NARIKAWA RYU
JP20 patents
⚠️ This page may combine multiple inventors who share the name “NARIKAWA RYU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CONSTRUCTION MACH CO
19 patentsUS11230824B2Jan 25, 2022
Work machine
HITACHI CONSTRUCTION MACH CO8 citations85
US11668069B2Jun 6, 2023
Construction machine
HITACHI CONSTRUCTION MACH CO2 citations73
US11391011B2Jul 19, 2022
Hydraulic excavator
HITACHI CONSTRUCTION MACH CO2 citations73
US11168459B2Nov 9, 2021
Work machine
HITACHI CONSTRUCTION MACH CO2 citations73
US10604914B2Mar 31, 2020
Control system for hydraulic construction machine
HITACHI CONSTRUCTION MACH CO3 citations73
US10450722B2Oct 22, 2019
Control system for construction machine
HITACHI CONSTRUCTION MACH CO3 citations73
US10435870B2Oct 8, 2019
Construction machine
HITACHI CONSTRUCTION MACH CO4 citations73
US11879233B2Jan 23, 2024
Work machine
HITACHI CONSTRUCTION MACH CO1 citations62
US12577755B2Mar 17, 2026
Work machine and control system
HITACHI CONSTRUCTION MACH CO0 citations52
US11649612B2May 16, 2023
Work machine
HITACHI CONSTRUCTION MACH CO0 citations52
US12529203B2Jan 20, 2026
Work machine
HITACHI CONSTRUCTION MACH CO0 citations51
US11970840B2Apr 30, 2024
Work machine
HITACHI CONSTRUCTION MACH CO0 citations51
US11639593B2May 2, 2023
Work machine
HITACHI CONSTRUCTION MACH CO0 citations51
US11313107B2Apr 26, 2022
Work machine
HITACHI CONSTRUCTION MACH CO0 citations51
US12012723B2Jun 18, 2024
Work machine
HITACHI CONSTRUCTION MACH CO0 citations50
US12331483B2Jun 17, 2025
Work machine control system
HITACHI CONSTRUCTION MACH CO0 citations49
US12264452B2Apr 1, 2025
Work machine
HITACHI CONSTRUCTION MACH CO0 citations49
US12065805B2Aug 20, 2024
Work machine
HITACHI CONSTRUCTION MACH CO0 citations49
US12385220B2Aug 12, 2025
Automated work system
HITACHI CONSTRUCTION MACH CO0 citations47