IS

Isao Shizuma

MI Mitsui Petrochemical Industries: 2 patents #322 of 1,024Top 35%
Overall (All Time): #2,268,217 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5604994 Drying hopper and powder drying method using the same Yoshiaki Annen, Akira Tsuzaki, Takao Uetake, Mitsunori Ichimura 1997-02-25
5423133 Drying hopper for polymer powder Yoshiaki Annen, Akira Tsuzaki, Takao Uetake, Mitsunori Ichimura 1995-06-13