YK

Yuuji Koyama

NS NS Sumikin Stainless: 2 patents #32 of 78Top 45%
KS Kobe Steel: 1 patents #937 of 1,773Top 55%
Overall (All Time): #1,482,828 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10072323 Hot rolled ferritic stainless steel sheet, method for producing same, and method for producing ferritic stainless steel sheet Shinichi Teraoka, Masaaki Kobayashi, Junichi Hamada, Norihiro Kanno, Yoshiharu Inoue +3 more 2018-09-11
9399809 Hot rolled ferritic stainless steel sheet, method for producing same, and method for producing ferritic stainless steel sheet Shinichi Teraoka, Masaaki Kobayashi, Junichi Hamada, Norihiro Kanno, Yoshiharu Inoue +3 more 2016-07-26
4245490 Thin rolled steel plate having unequal thickness Ichiro Kokubo, Seiji Ban, Kensaburo Takisawa, Junkiti Kobayashi, Chosei Ueda 1981-01-20