Inventor
DOI RYOTA
JP5 patents
⚠️ This page may combine multiple inventors who share the name “DOI RYOTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
4 patentsUS4537840AAug 27, 1985
Fuel cell using organic, high-molecular weight electrolyte
HITACHI LTD89 citations94
US4629664ADec 16, 1986
Liquid fuel cell
HITACHI LTD91 citations93
US4588660AMay 13, 1986
Fuel cell
HITACHI LTD22 citations80
US4217514AAug 12, 1980
Stator structure for induction motor
HITACHI LTD15 citations70