SD

Sadao Douchi

NS Nippon Steel: 1 patents #127 of 421Top 35%
VF Vallourec Oil And Gas France: 1 patents #4 of 24Top 20%
Overall (2021): #275,919 of 548,734Top 55%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10883319 Threaded connection for steel pipe Masaaki Sugino, Yasuhiro Yamamoto 2021-01-05