Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679728 | Surface-treated carbon black and rubber composition containing same | Tetsuji Kawazura, Hiroyuki Kaido, Kouichi Ikai, Fumito Yatsuyanagi | 1997-10-21 |
| 5679744 | Rubber composition | Tetsuji Kawauzra, Sadafumi Aibe | 1997-10-21 |