RY

Ryokichi Yamada

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
TI Tokyo Electric Power Company Holdings, Incorporated: 1 patents #245 of 711Top 35%
📍 Hitachinaka, JP: #1,699 of 2,447 inventorsTop 70%
Overall (All Time): #3,848,026 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5104426 Method of and apparatus for separating gas mixture Tetsuro Haga, Shuntaro Koyama, Akio Yamamoto, Naoya Iwama, Yasuo Funayama +1 more 1992-04-14