SS

Seiya Shima

HI Hitachi: 3 patents #133 of 2,935Top 5%
📍 Ibaraki, JP: #11 of 447 inventorsTop 3%
Overall (1989): #7,283 of 140,708Top 6%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4870556 Method and apparatus for controlling power converter Hiromi Inaba, Toshiaki Kurosawa, Toshimitsu Tobita, Mitsuyuki Hombu, Nobuo Mitsui 1989-09-26
4833586 PWM control for power converter system utilizing pulse dropping at minimum pulse widths Hiromi Inaba, Takeki Ando, Toshiaki Kurosawa, Nobuo Mitsui 1989-05-23
4829416 Apparatus for controlling power transducers of the pulse width modulation (PWM) control type Hiromi Inaba, Sadao Hokari, Toshimitsu Tobita, Hideaki Takahashi, Shigeta Ueda 1989-05-09