YA

Yuji Arai

NS Nippon Steel: 2 patents #54 of 316Top 20%
UC Usui Co.: 1 patents #1 of 7Top 15%
Overall (2025): #72,087 of 469,880Top 20%
2
Patents 2025

Issued Patents 2025

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12305597 Steel pipe for fuel injection pipe, and fuel injection pipe using same Taizo Makino, Masahiro Yamazaki, Tomohiko Omura, Osamu Endo, Naoki Serizawa +1 more 2025-05-20
12188110 Steel material suitable for use in sour environment Shinji Yoshida, Kuniaki Itoh, Takuya OKAMURA 2025-01-07