Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5023146 | Black surface-treated steel sheet | Katsushi Saito, Yujiro Miyauchi, Yoshio Shindo | 1991-06-11 |
| 5011744 | Black surface treated steel sheet | Katushi Saito, Yoshio Shindou, Fumio Yamazaki, Takashi Shimazu | 1991-04-30 |
| 4968391 | Process for the preparation of a black surface-treated steel sheet | Katsushi Saito, Yujiro Miyauchi, Yoshio Shindo | 1990-11-06 |
| 4861441 | Method of making a black surface treated steel sheet | Katushi Saito, Yoshio Shindou, Fumio Yamazaki, Takashi Shimazu | 1989-08-29 |