Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889566 | Method for producing cold rolled steel sheets having improved spot weldability | Susumu Okada, Makoto Imanaka, Susumu Masui, Takashi Obara, Kozo Tsunoyama | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889566 | Method for producing cold rolled steel sheets having improved spot weldability | Susumu Okada, Makoto Imanaka, Susumu Masui, Takashi Obara, Kozo Tsunoyama | 1989-12-26 |