HC

Hajimu Choba

SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #3,607,820 of 4,157,543Top 90%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6029714 Stainless steel pipe of bright annealing finish type, having highly-smoothed inner surface and method for producing the same Yoichi Imamura, Munekatsu Furugen 2000-02-29