Koei Tsuru

JS Jfe Steel: 1 patents #825 of 1,401Top 60%

NC Nhk Spring Co.: 1 patents #555 of 1,116Top 50%

📍 Yuki, JP: #33 of 59 inventorsTop 60%

Overall (All Time): #2,902,532 of 4,157,543Top 70%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
10041160	Steel for spring, and method for producing spring	Minoru Honjo, Kiyoshi Uwai, Shigeru Endo, Katsutoshi Yamashita, Keiichi Fujie +1 more	2018-08-07