KN

Katsuyuki Nishioka

NC Nhk Spring Co.: 3 patents #263 of 1,116Top 25%
Overall (All Time): #1,543,018 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8460483 Method for heat treatment of coiled spring Takashi Yajima, Hideki Okada, Takeshi FURUSE 2013-06-11
5258082 High strength spring Hiroshi Koyama, Yasuo Sato, Akira Tange, Tadayoshi Akutsu 1993-11-02
5225008 Method for manufacturing a high-strength spring Hiroshi Koyama, Yasuo Sato, Akira Tange, Tadayoshi Akutsu 1993-07-06