Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885066 | Electrolytic finishing method | Teruo Asaoka | 1989-12-05 |
| 4880509 | Electrolytic finishing method and apparatus | Teruo Asaoka, Shogo Yoshioka, Haruki Sugiyama | 1989-11-14 |
| 4880516 | Electro-chemical machine | Teruo Asaoka, Yasuhiro Iwasaki | 1989-11-14 |
| 4842702 | Method for finishing a work | Teruo Asaoka, Yasuhiro Iwasaki | 1989-06-27 |
| 4800006 | Electrolytic finishing system and method | Teruo Asaoka, Masayoshi Moriya, Yasuhiro Iwasaki, Haruki Sugiyama | 1989-01-24 |