SA

Seiji Asaba

NC Nittetsu Mining Co.: 1 patents #25 of 62Top 45%
Overall (All Time): #3,838,213 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5264030 Filler for degradable plastics and process for producing the same Katsuyuki Tanabe, Masaharu Umebayashi, Atsushi Ugomori 1993-11-23