SO

Shigetoshi Okamatsu

HI Hitachi: 4 patents #13 of 1,214Top 2%
📍 Hitachinaka, JP: #2 of 109 inventorsTop 2%
Overall (1982): #1,607 of 81,411Top 2%
4
Patents 1982

Issued Patents 1982

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4338558 Induction motor control system and method Takashi Tsuboi, Masahiko Ibamoto, Hiroshi Narita 1982-07-06
4335337 Control system for electric motor vehicle Takashi Tsuboi, Masahiko Ibamoto, Hiroshi Narita 1982-06-15
4327313 Control apparatus for electric car Takashi Tsuboi, Masahiko Ibamoto, Hiroshi Narita, Eiji Kozu 1982-04-27
4315203 Control system for induction motor-driven car Masahiko Ibamoto, Hiroshi Narita, Noboru Oouchi 1982-02-09