KY

Kenzou Yokoyama

NC Nippon Kokan Co.: 1 patents #290 of 735Top 40%
YC Yushiro Chemical Industry Co.: 1 patents #15 of 77Top 20%
Overall (All Time): #3,986,908 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4711733 Lubricant for the production of seamless tubes Noboru Kanda, Ken Aoki, Shinji Akita, Masayuki Hatanaka, Tatsuharu Oda 1987-12-08