Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10662516 | Hot-dip Al—Zn—Mg—Si coated steel sheet and method of producing same | Toshihiko Ooi, Yohei Sato, Yoichi Tobiyama, Akihiko Furuta, Masahiro Yoshida +3 more | 2020-05-26 |
| 7842400 | Surface-treated steel sheet and method for manufacturing the same | Takafumi Yamaji, Akira Matsuzaki, Kazuhisa Okai, Keiji Yoshida, Masaaki Yamashita +1 more | 2010-11-30 |
| 5496652 | Zinc-plated steel plate having resin coating film | Kenichi Sasaki, Masaaki Yamashita, Toyofumi Watanabe | 1996-03-05 |
| 5393605 | Zinciferous plated steel sheet excellent in press-formability and corrosion resistance | Tatsuya Miyoshi, Masaaki Yamashita, Toyofumi Watanabe, Norio Kosaka | 1995-02-28 |
| 4585681 | Frost damage proofed pile | Kenji Kidera, Shigeru Nakagawa, Takashi Takeda, Katsumi Omori | 1986-04-29 |