Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887000 | Electron beam generation apparatus | Toshifumi Nakatani | 1989-12-12 |
| 4876160 | Organic composite-plated steel sheet | Yoshio Shindou, Motoo Kabeya, Takashi Shimazu | 1989-10-24 |
| 4861441 | Method of making a black surface treated steel sheet | Katushi Saito, Yoshio Shindou, Toshimichi Murata, Takashi Shimazu | 1989-08-29 |
| 4857154 | Method for producing a Zn-series electroplated steel sheet | Yoshio Shindo, Kouichi Wada, Hidehiro Tomio, Katsushi Saito | 1989-08-15 |
| 4853295 | Surface treated steel material particularly electroplated steel sheet | Yoshio Shindo, Koichi Wada | 1989-08-01 |