HK

Hideo Kakegawa

JR Japanese National Railways: 1 patents #19 of 102Top 20%
NO Nippon Oil: 1 patents #392 of 773Top 55%
Overall (All Time): #4,089,369 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4267085 Injection materials for railroad track beds Yasuo Katoh, Shigeyuki Hayashi, Tadakazu Yamashita 1981-05-12