RO

Ryozo Okumura

IC Idemitsu Petrochemical Co.: 2 patents #1 of 35Top 3%
Overall (1997): #25,122 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5650480 Process for preparing polycarbonate Shigeki Kuze, Seiji Takahashi 1997-07-22
5625027 Branched polycarbonate Shigeki Kuze, Seiji Takahashi 1997-04-29