Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |