Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885057 | Method for treating synthetic pulp particles, and pulp particles composed of synthetic polymer | Tsutomu Kiriyama, Noriaki Sasaki, Yoshitaka Sakamoto, Kenji Ishimaru | 1989-12-05 |