Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700561 | Chromated metal sheet having high corrosion resistance with improved lubricity and electric conductivity | Junichi Mano, Youzou Ogawa, Keizou Okuno, Nobuo Totsuka | 1997-12-23 |
| 5395687 | Surface-treated aluminum material having improved spot resistance weldability, workability, and corrosion resistance | Nobuo Totsuka, Naoki Nishiyama, Yasuji Uesugi, Kouichi Hashiguchi, Rinsei Ikeda +2 more | 1995-03-07 |
| 5389436 | Surface-treated metal sheet which excels in workability, electrical conductivity and corrosion resistance, and method of producing the same | Nobuo Totsuka, Katsuhei Kikuchi, Yoshihiro Naruse | 1995-02-14 |