HK

Hirofumi Kishikawa

SC Shinto Paint Co.: 1 patents #42 of 121Top 35%
SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #2,209,918 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6488785 Surface treated steel material Masato Yamashita, Atsumu Kanda, Hiroshi Ono 2002-12-03
6342554 Surface treatment agent for steel material Masato Yamashita, Atsumu Kanda, Hiroshi Ono 2002-01-29