KT

Kohji Tsukuma

TC Toyo Soda Manufacturing Co.: 1 patents #136 of 272Top 50%
Overall (All Time): #4,052,666 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4387079 Method of manufacturing high-purity silicon nitride powder Kiyoshi Kasai, Takaaki Tsukidate 1983-06-07