Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874436 | Method for producing high purity electrolytic copper | Takashi Ogata, Yoshio Kawasumi, Chikara Tominaga, Kanji Tanaka | 1989-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874436 | Method for producing high purity electrolytic copper | Takashi Ogata, Yoshio Kawasumi, Chikara Tominaga, Kanji Tanaka | 1989-10-17 |