Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5395510 | Efficient preparation of blackened steel strip | Katsuhei Kikuchi, Sachiko Suzuki, Nobuo Totsuka, Keizo Okuno, Yoshihiro Naruse | 1995-03-07 |
| 5160590 | Electrolytic processing method for electrolytically processing metal surface | Nobuo Totsuka, Mitsuo Kimura, Yuji Mishiro, Masakazu Sengan, Katsunobu Ishizawa +3 more | 1992-11-03 |
| 5061575 | Lubricating resin coated steel strips having improved formability and corrosion resistance | Taizo Mohri, Nobuo Totsuka, Shunichi Tsugawa, Hideaki Sawatari, Tanehiro Inoue | 1991-10-29 |
| 4997529 | Electrolytic process and apparatus for forming pattern on surface of metallic object | Nobuo Totsuka, Katsuhei Kikuchi | 1991-03-05 |
| 4935111 | Method for producing black colored steel strip | Sachiko Suzuki, Katsuhei Kikuchi, Nobuo Totsuka | 1990-06-19 |