JY

Jiro Yasumura

IC Idemitsu Petrochemical Co.: 1 patents #305 of 578Top 55%
Overall (All Time): #3,973,595 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4662942 Cement additives Yasuharu Koga, Mitsuo Nagano 1987-05-05