Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874495 | Apparatus for producing a fiber aggregate | Tomohito Ito, Renichi Isomura, Hidetoshi Hirai | 1989-10-17 |
| 4826569 | Process for producing a fiber aggregate | Tomohito Ito, Renichi Isomura, Hidetoshi Hirai | 1989-05-02 |