TO

Toshihiro Okon

SC Shin-Etsu Chemical Co.: 1 patents #35 of 107Top 35%
📍 Joetsu, JP: #7 of 16 inventorsTop 45%
Overall (1989): #48,313 of 140,708Top 35%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4842837 Process for producing fine spherical silica Takaaki Shimizu 1989-06-27