YK

Yuji Koyama

NS Nippon Steel: 2 patents #14 of 211Top 7%
📍 Tokyo, MS: #4 of 6 inventorsTop 70%
Overall (2003): #34,752 of 273,478Top 15%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6645318 Fuel tank made of ferritic stainless steel Akihiko Takahashi, Shunji Sakamoto, Katsuhiko Kato, Tadashi Komori, Naoto Ono +1 more 2003-11-11
6585799 Cast steel piece and steel product excellent in forming characteristics and method for treatment of molted steel therefor and method for production thereof Masafumi Zeze, Takashi Morohoshi, Ryusuke Miura, Shintaro Kusunoki, Yasuhiro Kinari +4 more 2003-07-01