Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4565546 | Condensation product and use thereof as dispersant for pitch in water slurry | Katsuhiko Shimakawa, Akihiko Shimizu, Toshio Kanai | 1986-01-21 |
| 4539012 | Pitch-containing composition | Katsuhiko Shimakawa, Zenichi Mashino | 1985-09-03 |
| 4537600 | Method for the preparation of pitch-in-water slurry | Hiroto Tajima, Hironori Kawakami, Zenichi Mashino, Seinoshin Hayami | 1985-08-27 |