Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5560785 | Method for forming a protective chemical layer on copper and copper alloy surfaces | Hirohiko Hirao, Yoshimasa Kikukawa, Toshihiro Okamoto, Takayuki Murai, Seiji Sogabe +2 more | 1996-10-01 |
| 5498301 | Agent for treating surfaces of copper and copper alloys | Hirohiko Hirao, Yoshimasa Kikukawa, Toshihiro Okamoto, Takayuki Murai, Seiji Sogabe +2 more | 1996-03-12 |