Katuaki Ishikawa

NC Nippon Hodo Co.: 1 patents #8 of 36Top 25%

NO Nippon Oil: 1 patents #392 of 773Top 55%

NC Nippon Petrochemicals, Co.: 1 patents #181 of 359Top 55%

Overall (All Time): #3,837,739 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5262453	Cushion or trackbed material for use in riding-ground	Yutaka Watanabe, Kazuo Aoyama, Hisanobu Niwata, Sumio Ikeda, Yoshiteru Kato	1993-11-16