SY

Seiichiro Yokoyama

TK Toyo Boseki Kabushiki Kaisha: 1 patents #13 of 53Top 25%
Overall (1989): #58,241 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4839701 Hydrogenated amorphous silicon film Osamu Imagawa, Masazumi Iwanishi 1989-06-13