SI

Seizi Isoyama

DC Dowa Mining Co.: 1 patents #1 of 3Top 35%
📍 Okayama, JP: #4 of 26 inventorsTop 20%
Overall (1982): #31,785 of 81,411Top 40%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352717 Apparatus for production of spherical grain ferrite powder Yasuo Watanabe, Yoshikazu Yamamichi 1982-10-05