Inventor
KIYASU KOICHI
JP17 patents
Patents
17 patentsUS11566640B2Jan 31, 2023
Hydraulic control circuit for a construction machine
CATERPILLAR SARL7 citations85
US12180682B2Dec 31, 2024
Hydraulic control system
CATERPILLAR SARL4 citations74
US11692332B2Jul 4, 2023
Hydraulic control system
CATERPILLAR SARL4 citations74
US12123172B2Oct 22, 2024
Boom control circuit for a construction machine
CATERPILLAR SARL2 citations72
US12018459B2Jun 25, 2024
Hydraulic control system for a working machine
CATERPILLAR SARL2 citations72
US11629479B2Apr 18, 2023
Hydraulic control circuit for a construction machine
CATERPILLAR SARL3 citations72
US12410588B2Sep 9, 2025
Hydraulic control system in working machine
CATERPILLAR SARL1 citations63
US12366054B2Jul 22, 2025
Hydraulic control system in working machine
CATERPILLAR SARL1 citations63
US12345019B2Jul 1, 2025
Hydraulic control system in working machines
CATERPILLAR SARL1 citations60
US12565754B2Mar 3, 2026
Hydraulic control system in excavator type construction machine
CATERPILLAR SARL0 citations51
US12534882B2Jan 27, 2026
Hydraulic circuit for a construction machine
CATERPILLAR SARL0 citations51
US12428817B2Sep 30, 2025
Hydraulic circuit of a construction machinery
CATERPILLAR SARL0 citations51
US12320372B2Jun 3, 2025
Calibration system and calibration method in hydraulic system
CATERPILLAR SARL0 citations51
US12163539B2Dec 10, 2024
Valve calibration system and calibration method
CATERPILLAR SARL0 citations51
US11885099B2Jan 30, 2024
Drift-prevention valve device, blade device, and working machine
CATERPILLAR SARL0 citations49
US11428333B2Aug 30, 2022
Valve apparatus and fluid pressure system equipped therewith
CATERPILLAR SARL0 citations48
US12540634B2Feb 3, 2026
Calibration system in hydraulic system
CATERPILLAR SARL0 citations47