Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324827 | Water-proof, fuse-bonding fabric | Hideyuki Hiraoka | 1982-04-13 |
| 4312907 | Water-impermeable sheet material | Yoshiji Hiraoka | 1982-01-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4324827 | Water-proof, fuse-bonding fabric | Hideyuki Hiraoka | 1982-04-13 |
| 4312907 | Water-impermeable sheet material | Yoshiji Hiraoka | 1982-01-26 |