Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885066 | Electrolytic finishing method | Youhei Kuwabara | 1989-12-05 |
| 4883568 | Finishing method employing electro-chemical process | Yohei Kuwabara | 1989-11-28 |
| 4880509 | Electrolytic finishing method and apparatus | Youhei Kuwabara, Shogo Yoshioka, Haruki Sugiyama | 1989-11-14 |
| 4880516 | Electro-chemical machine | Youhei Kuwabara, Yasuhiro Iwasaki | 1989-11-14 |
| 4863579 | Power supply system for electrolytic processing apparatus | — | 1989-09-05 |
| 4861450 | Power supply system for electrolytic processing apparatus | Shogo Yoshioka | 1989-08-29 |
| 4842702 | Method for finishing a work | Youhei Kuwabara, Yasuhiro Iwasaki | 1989-06-27 |
| 4800006 | Electrolytic finishing system and method | Youhei Kuwabara, Masayoshi Moriya, Yasuhiro Iwasaki, Haruki Sugiyama | 1989-01-24 |