HY

Hiroyoshi Yamakawa

AE Aida Engineering: 1 patents #83 of 163Top 55%
KS Kobe Steel: 1 patents #857 of 2,031Top 45%
YI Yamakawa Industrial: 1 patents #5 of 23Top 25%
Overall (All Time): #2,307,992 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5098489 Process for manufacturing high-strength parts of an automobile transmission system Tsunahiro Yamakawa, Satoru Nito, Ichiro Kokubo, Takuo Hosoda, Masakatsu Hata 1992-03-24
4651866 Feed bar driving system in transfer press machine Syozo Imanishi, Yutaka Ono 1987-03-24