RF

Ryoma Fujiyoshi

JS Jfe Steel: 1 patents #93 of 248Top 40%
SC Shinagawa Refractories Co.: 1 patents #1 of 8Top 15%
Overall (2023): #272,461 of 537,848Top 55%
1
Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11821691 Gas injection nozzle refractory and gas injection nozzle Seiji Hosohara, Atsuhisa Iida, Atsushi Torigoe 2023-11-21