KI

Kouichi Ikai

The Yokohama Rubber Co.: 2 patents #475 of 1,136Top 45%
Overall (All Time): #2,247,531 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5883179 Rubber composition comprising carbon black surface treated with silica Masayuki Kawazoe, Tetsuji Kawazura, Yoshiaki Hashimura, Fumito Yatsuyanagi, Kazunori Ishikawa 1999-03-16
5679728 Surface-treated carbon black and rubber composition containing same Tetsuji Kawazura, Hiroyuki Kaido, Fumito Yatsuyanagi, Masayuki Kawazoe 1997-10-21