YY

Yuzo Yoshiji

KK Kureha Kagaku Kogyo: 1 patents #332 of 607Top 55%
Overall (All Time): #3,917,024 of 4,157,543Top 95%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4976825 Process for recovering N-methylpyrrolidone by plural distillations Takao Iwasaki, Katsumi Horikoshi 1990-12-11