Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882002 | Process of manufacturing a composite panel for shock absorption | Yoshio Ando, Yoshiki Ishige, Shoji Sato | 1989-11-21 |
| 4841618 | Method of manufacturing an electrocast shell having permeability | Tamio Furuya, Yuichi Tazaki, Yoshiki Ishige, Yuichi Tsuchimoto | 1989-06-27 |