Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874646 | Ultrafine tube and method for its production | Yuuji Hamada, Masakazu Sakata, Takanori Fujii, Yukinori Kuwano | 1989-10-17 |
| 4855214 | Radiation-sensitive high-polymeric material | Yukinori Kuwano, Yuji Hamada | 1989-08-08 |