Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4693879 | Ultrasonic vibration sieving apparatus and process for purifying carbon black by using the apparatus | Shushichi Yoshimura, Yasunori Hiwatashi, Hiromu Kobayashi, Hozo Yamazaki, Teruji Tahara +1 more | 1987-09-15 |