HU

Hiromu Utsumi

HC Hitachi Koki Co.: 4 patents #273 of 888Top 35%
📍 Hitachinaka, JP: #962 of 2,447 inventorsTop 40%
Overall (All Time): #1,296,001 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5199626 Combustion gas powered tool Tsunehisa Terayama, Takuji Torii, Shinki Ohtsu, Teruo Suzuki, Toshifumi Kubota +3 more 1993-04-06
5090606 Combustion gas powered fastener driving tool Takuji Torii, Shinki Ohtsu, Yo Kawakami, Teruo Suzuki, Yoshimitsu Kawasaki +3 more 1992-02-25
4913331 Internal-combustion piston driving apparatus having a decompression channel Yo Kawakami, Shinki Ohtsu 1990-04-03
4773581 Combustion gas powered tool Shinki Ohtsu, Yo Kawakami 1988-09-27