TO

Toshiyuki Okuma

JS Jfe Steel: 2 patents #578 of 1,401Top 45%
NC Nkk Co.: 2 patents #309 of 1,173Top 30%
📍 Ota, JP: #165 of 330 inventorsTop 50%
Overall (All Time): #972,896 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
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