SI

Sumio Ikeda

NC Nippon Petrochemicals, Co.: 2 patents #116 of 359Top 35%
NC Nippon Hodo Co.: 1 patents #8 of 36Top 25%
NO Nippon Oil: 1 patents #392 of 773Top 55%
Overall (All Time): #2,305,271 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5262453 Cushion or trackbed material for use in riding-ground Yutaka Watanabe, Kazuo Aoyama, Hisanobu Niwata, Katuaki Ishikawa, Yoshiteru Kato 1993-11-16
5260384 Polyethylene composition Toshifumi Morimoto, Toshiyuki Miyauchi, Kunimichi Kubo, Narumi Ishikawa, Noboru Ikegami 1993-11-09