YI

Yoshimi Ishizuka

DK Denki Kagaku Kogyo: 1 patents #291 of 655Top 45%
Overall (All Time): #3,924,118 of 4,157,543Top 95%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4816501 Heat-sensitive color developable composition Tomohiko Nomura, Hitoshi Shimizu, Hiroshi Inoue, Hiroshi Hirano 1989-03-28