AK

Akifumi Kawana

NS Nippon Steel: 8 patents #274 of 4,423Top 7%
NM Nippon Steel & Sumitomo Metal: 1 patents #786 of 1,491Top 55%
Overall (All Time): #561,689 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11203797 Steel wire and wire rod Makoto Okonogi, Shingo Yamasaki, Hideaki Gotohda 2021-12-21
10704118 Steel wire and wire rod Makoto Okonogi, Shingo Yamasaki, Hideaki Gotohda 2020-07-07
10287658 Wire material for non-heat treated component, steel wire for non-heat treated component, and non-heat treated component and manufacturing method thereof Makoto Okonogi, Shingo Yamasaki, Hideaki Gotohda 2019-05-14
5665182 High-carbon steel wire rod and wire excellent in drawability and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-09-09
5662747 Bainite wire rod and wire for drawing and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-09-02
5658399 Bainite wire rod and wire for drawing and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-08-19
5658402 High-carbon steel wire rod and wire excellent in drawability and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-08-19
5650027 High-carbon steel wire rod and wire excellent in drawability and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-07-22
5647918 Bainite wire rod and wire for drawing and methods of producing the same Hiroshi Oba, Ikuo Ochiai, Seiki Nishida 1997-07-15