Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874511 | Apatite chromatography column system | Tsutomu Kawasaki | 1989-10-17 |
| 4810437 | Process for manufacturing carbon fiber and graphite fiber | Takayuki Izumi, Kikuji Komine | 1989-03-07 |