MA

Masahiko Arai

HI Hitachi: 2 patents #771 of 3,950Top 20%
TW The Japan Steel Works: 1 patents #2 of 22Top 10%
📍 Hitachinaka, JP: #48 of 281 inventorsTop 20%
Overall (2002): #52,930 of 266,432Top 20%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6419453 Steam turbine rotor shaft Yutaka Fukui, Hiroyuki Doi, Ryo Hiraga, Kenichiro Nomura, Toshio Fujita +1 more 2002-07-16
6398504 Steam turbine blade, and steam turbine and steam turbine power plant using the same Shigeyoshi Nakamura, Takeshi Onoda, Masao Shiga 2002-06-04