Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361617 | Hollow water-absorbing polyester filaments and a process for producing the same | Kiyokazu Tsunawaki, Osamu Wada, Akio Kimura | 1982-11-30 |
| 4336307 | Hollow water absorbing polyester filaments and a process for producing the same | Masahiro Shiozaki, Kiyoshi Nawata, Osamu Wada, Kiyokazu Tsunawaki, Takatoshi Kuratsuji +1 more | 1982-06-22 |