Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426020 | Etchant for copper or copper alloys | Masao Okada, Masayo Kuriyama | 2002-07-30 |
| 5965036 | Microetching composition for copper or copper alloy | Yoshiro Maki, Toshiko Nakagawa, Yasushi Yamada, Takashi Haruta | 1999-10-12 |
| 5807493 | Microetching method for copper or copper alloy | Yoshiro Maki, Toshiko Nakagawa, Yasushi Yamada, Takashi Haruta | 1998-09-15 |
| 5532094 | Composition for treating copper or copper alloy surfaces | Daisaku Akiyama, Toshiko Nakagawa | 1996-07-02 |