Inventor
ITSUJI YOSHIYASU
JP8 patents
Patents
8 patentsUS5630316AMay 20, 1997
Hydraulic driving apparatus using a bladder-type accumulator with an improved safety
SUMITOMO HEAVY INDUSTRIES35 citations88
US6053707AApr 25, 2000
Control device for slanting plate type variable capacity pump
SUMITOMO HEAVY INDUSTRIES10 citations68
US12338601B2Jun 24, 2025
Shovel
SUMITOMO HEAVY INDUSTRIES1 citations63
US12031301B2Jul 9, 2024
Shovel and work support system for construction machine
SUMITOMO HEAVY INDUSTRIES0 citations61
US12031302B2Jul 9, 2024
Excavator
SUMITOMO HEAVY INDUSTRIES0 citations61
US11655611B2May 23, 2023
Shovel
SUMITOMO HEAVY INDUSTRIES0 citations61
US11613873B2Mar 28, 2023
Shovel and work support system for construction machine
SUMITOMO HEAVY INDUSTRIES1 citations61
US12241229B2Mar 4, 2025
Shovel
SUMITOMO HEAVY INDUSTRIES0 citations59